believing

We have been believing for years that intermittent fasting is the definitive weapon to lose weight. Science has another idea

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During the last years, the intermittent fasting has gone from being something exceptional to becoming a nutritional strategy that there is more and more talk and that it has more followers behind it. And it is no wonder, since the promise is quite seductive as it does not focus on what you eat, but on when you eat, activating different metabolic switches to accelerate fat burning. Although there are also detractors behind. New data. The Cochrane library, considered a great world reference, published a few days ago a great review about intermittent fasting that acts as a bucket of cold water, since it suggests that this diet does not offer superior benefits to conventional weight loss diets. The backup. We are not talking about a small study whose validity can be questioned, but in this case the Cochrane researchers analyzed 22 randomized controlled trials that added up to a total of 1,995 participants. overweight or obesity. The objective here was to compare different fasting modalities, such as going 16 hours without being able to eat with eight hours of eating, fasting on alternate days or 5:2 diet compared to classic calorie restriction or inaction. What they found is that, when pitting intermittent fasting against regular dietary advice, the difference in weight loss is virtually zero. The data. Getting into the matter, when intermittent fasting was compared With standard calorie-restricted diets, the mean difference in weight change was a minuscule -0.33%. This difference can translate into that intermittent fasting may result in little to no difference in weight loss with the traditional method. Regarding quality of life, such as the feeling of energy, no difference was seen and, regarding the levels of total cholesterol, HDL cholesterol and triglycerides, fasting did not prove to be a panacea either, yielding results of “little or no difference” compared to the control diets. The small print. One of the most critical points of the Cochrane review is the certainty of the evidence, which they rated mostly as “low” or “very low.” This does not mean that the studies are poorly done, but rather that there are important limitations, such as risk bias, inconsistency in results, and lack of precision. But there is one fact that should worry anyone who decides to opt for this diet independently, without medical advice, since, although the evidence is uncertain, some studies pointed to associated side effects specifically to fasting. These include headaches, nausea, cold intolerance or even insomnia and lack of concentration. What is not yet known. Perhaps it is the most revealing thing about this scientific study, since there are still many unknowns surrounding intermittent fasting that invite further research. In this case, none of the 22 studies included data on “patient satisfaction,” which is important because we don’t know if people prefer to go hungry for a few hours in exchange for eating more later, or if they hate the process. And being comfortable with a diet is essential so that you don’t abandon it halfway through. In addition to this, none of the studies pointed to the relationship that may exist in chronic diseases that require significant dietary control, such as diabetes, and which is very common in the population. But one of the big problems in science today is duration, since most studies lasted less than 12 months. We don’t know if fasting is sustainable or safe beyond a year. It is not a miracle diet. What we do know is that intermittent fasting works, but the key point is that It is not superior to the tools we already had as a calorie restriction accompanied by a balanced diet and exercise. For the average patient, this is actually good news: it means that the The best diet is the one you can stick to. If someone finds it easier to skip breakfast with a 16:8 fast than to count calories at each meal, fasting is a valid tool. But if fasting causes headaches, you’re not missing out on any “magic” metabolic benefits from eating three times a day. Although in this process the most important thing is always to be advised by personnel who are qualified in nutrition to be able to have the best dietary plan, to have real objectives and, above all, not to get frustrated along the way. Images | VD Photography In Xataka | We believed that a vegetarian diet guaranteed longevity. In extreme old age, the data says just the opposite

We’ve been believing oatmeal is the perfect breakfast for years, but science has a warning: there’s a limit

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Over the past few years, oatmeal has been crowned the undisputed queen of healthy breakfasts. And you just have to look at the internet a little to see the porridge from Instagram wave cardiologists recommendation to think that we are facing a perfect food without any type of failure. However, everything can have fine print and oatmeal is one of them. Investigating. Even if you eat healthy, there are people who experience abdominal bloating, gas, or general digestive discomfort with oats. And it’s not that oats are bad, but there are chances that we are eating them wrong. This is something you have already researched. to Monash Universitya world leader in digestive health, by putting an exact figure on the table: 52 grams. This is something that also the nutritionist has put on the table Óscar Hurtado who points out that oats are healthy, but they have a very strict “tolerance curve” for some intestines. The reason. The problem with oats is found in the FODMAPs (oligosaccharides, disaccharides, monosaccharides and fermentable polyols). These are nothing more than short chain carbohydrates that the small intestine cannot absorb well, and that is why They continue their ‘journey’ to the large intestine where the bacteria found here rapidly ferment them. producing gas. But not only this, it can drag water causing diarrhea. And this is where Monash University comes in, which has measured the effect that these compounds have on our body. One of its main conclusions It is in that 52 grams of oats (which is half a cup) is the safe amount of fructans for most humans. If we go too far. In the case of passing the barrier of 60-70 grams, the fructan content in the intestine it triggers and begins to cause problems. Something that is of great interest to those who suffer from a digestive problem such as Irritable Bowel Syndrome (IBS)since it would be going from an ‘anti-inflammatory’ breakfast to a trigger for abdominal distension and pain. More studies. This is not a warning from now, but has great support in science. An example is the Halmos pivotal trial that showed that a low-FODMAP diet reduces gastrointestinal symptoms. between 22% and 45% more than usual diets. This was because they reduced the amount of fructans, very present in oats, in the diet they ate. But in addition, a 2022 study also confirmed that portion control of this type of fermentable carbohydrates significantly improved life in patients with IBS. And it wasn’t about eliminating oats from the diet, but about keeping them in a “safe zone.” There is no need to demonize. With these studies, logically we do not have to reach this point with oats, since it has many benefits behind it. The Spanish Heart Foundation and multiple nutritional studies remind us why it rose to the breakfast throne in the first place. And it has the ability to give satiety, which helps with weight control, and also delays the absorption of carbohydrates to prevent insulin spikes that are really harmful to the body. Although it doesn’t stop there, since for people with high cholesterol its high amount of beta-glucans can reduce the “bad” cholesterol known as ‘bad cholesterol’ or LDL. Based on tolerance. The conclusion we can reach is that if you have an iron stomach and a good oatmeal breakfast does not affect it at all, you can continue taking it normally. But in the event that symptoms such as bloating or diarrhea begin to appear, it is better to start lowering the dose to see if this “perfect breakfast” begins to feel good again. In this way, we are left with its beneficial properties without the digestive discomfort that we can hate so much. Images | Dor Farber In Xataka | We have been relying on the Nutri-Score in stores for years. Science believes that its real impact is zero

We have been believing for decades that wet hair makes us sick in winter. Science knows perfectly well that it is a lie

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“Don’t go out with wet hair or you’ll catch pneumonia” or “put on your coat or you’ll catch a cold” are very grandmotherly phrases that almost all of us have been told in our childhood and that have been burned into our brains. But the question we can ask ourselves: is this true? The reality is that not directly. The culprit. May we have a cold or flu It doesn’t exactly depend on the cold. The culprit in this case are infectious agents such as viruses, the most common being rhinovirus. The fact that this microscopic germ accesses our body and overcomes our defense barriers causes it to begin to replicate and generate its effect that In the long run it’s really annoying when accompanied by fever, cough and a host of other symptoms. In this way, the equation is quite simple: if there is no exposure to the virus, the external temperature is irrelevant. To understand it, if we put ourselves in the situation of going out to Antarctica with our hair soaked and naked, we would surely die of hypothermia, but we wouldn’t catch a cold unless a penguin sneezed rhinovirus on us. The same thing happens if we are in an environment completely isolated from viruses and at a very low temperature: no infection would occur. The experts. Just as it isExperts from the Mayo Clinic explain and disseminating pharmacistscold alone does not have the ability to spontaneously generate a pathogen. Cold is a physical condition, not a biological agent. And science has been trying to explain this for decades. One of the most cited and relevant studies is the one carried out by the University of Rochester where they separated volunteers into two groups. One of them was exposed to low temperature and cold conditions; the other was kept in a warm and comfortable environment. Subsequently, they were exposed to rhinovirus that causes colds. The result. In this way, it was seen that between the two groups there was no significant difference in the contagion of the virus or in the symptoms they presented. The group subjected to the cold did not have a harsher cold, so the factor in getting sick was solely and exclusively the virus. Getting sick in winter. It is a reality that when winter arrives the rates of people with colds or flu increase greatly, as we are seeing in Spain these days. This makes us think that the relationship really exists, whatever science says. And this is where we give a little point to ‘grandmother’s advice’. Science suggests that rhinoviruses they replicate better at the temperatures we usually have in our noseswhich ranges from 33 to 35 °C. But in addition, the cold temperature also causes our defenses to lower, so it is much easier for the virus to access our body and begin to spread in a much simpler way. And that’s why winter is where we see a higher rate of colds. Other factors. But he is not the only one. The social factor is also a big culprit, because when it is cold the truth is that it is better to be locked up at home with Netflix. But in these cases we would be in an interior space with little ventilation (because it is cold) and very close to other people. In this way, if a person has the virus, the probability of contagion skyrockets in a heated indoor place much more than in an open-air park at 5°C. Another point is the dry environment that exists at this time due to the cold outside and the indoor heating. This causes the nasal mucous membranes to dry out, which is a serious problem for the mucus, which is our first line of defense at the entrance to viruses and bacteria. If the mucosa is dry, its effectiveness decreases and facilitates the entry of pathogens. Wet hair. A special distinction must be made for this myth since today there is no evidence to justify a relationship between wet hair and an increase in viral infections. Going out with wet hair causes a great loss of body heat (since the head has a lot of vascularized surface), which generates notable thermal discomfort. This translates into a feeling of very cold, feeling cold and perhaps accompanied by a headache due to muscle tension derived from the cold, but the humidity on the scalp does not attract germs or facilitate infection. Images | Dmitriy Kievskiy Brittany Colette In Xataka | H5N1 bird flu unleashes a massacre in Antarctica: half of the female seals have already disappeared

that the Russian hypersonic missiles do not reach the target believing that they are in Peru

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He Kinzhalpresented by the Kremlin as a hypersonic missile “invincible” capable of overcoming any Western defense, has experienced a series of technical improvements designed to further increase their lethality and reduce the possibilities of interception. In fact, until three months ago it was a real toothache for Ukrainian defenses. Until they have come up with an idea… and a song. Evolution of a missile. Derived from Iskander-M and launched from aerial platforms such as MiG-31K or the Tu-22M3the missile combines speeds that can approach Mach 10 with a deeply maneuvered terminal profile, capable of executing abrupt descents, sudden lateral changes and trajectories designed to break the radar lock of Ukrainian Patriots. Its ability to hide within mixed salvos, blending in with slower missiles, has drastically reduced interception rates: from 37% in August to just one 6% in September. This has made, in theory, previously interceptable missiles become threats that are very difficult to stop, especially when they are used in massive attacks that combine hundreds of drones and dozens of ballistic or cruise missiles. The hidden weakness. However, despite its speed and maneuverability, the Kinzhal has a technical Achilles’ heel: it depends on the navigation system. GLONASS satellite to correct the natural errors of the inertial system, whose precision tends to degrade over time. TO INS differencethe satellite link can be manipulatedinterfered with or supplanted. And here lies the Ukrainian advance. Although the missile incorporates controlled pattern receiving antennas (taking their number from 4 to 8, 12 and now 16 elements in a Russian attempt to counter interference), these electronic defenses have proven to be insufficient against systems designed specifically for front-line conditions. Ukrainian unity Night Watch has shown that, despite Russian improvements, the Kometa receivers They are still based on technology inherited from the Soviet era, unable to resist a spoofing well executed. This combination of high kinematic complexity and electronic vulnerability creates a tactical paradox: Russia’s fastest and theoretically most advanced missile can be diverted by manipulated digital signals if they manage to infiltrate its navigation cycle. A kind of electronic optical illusion. Music as a weapon of precision. Before the fall of the Patriot effectivenessUkraine has opted for a completely different weapon: Lima, a electronic warfare system which not only blocks the Kinzhal’s satellite communications, but also replaces its navigation stream with false data. This system creates a large zone of electronic denial in which missiles lose their spatial reference, but does so with sufficient precision to induce highly controlled errors. Their spoofing technique is more sophisticated than simple jamming: it does not turn off navigation, but rather manipulates it. Lima sends a signal in binary format that can include any content, but operators have chosen to embed the ukrainian anthem “Our Father Is Flag”both for technical and symbolic reasons. This deceptive signal, once accepted by the missile’s receivers, allows it to believe that it is thousands of kilometers to the west, specifically in Lima (Peru), forcing it to abruptly correct its trajectory. At speeds above Mach 5, these changes generate structural stresses that overcome the resistance of the fuselage, causing the missile to break up in flight or crash without detonating. In this way, Ukraine has managed to divert or destroy more than about twenty Kinzhales in a few weeks, a much more significant achievement given its scarcity and its cost to Russia. The controlled diversion. The results of the Lima system are visible in the impact patterns: craters that appear in dozens or even hundreds of kilometers of the planned objectives, sometimes up to 200 km off course. The change in accuracy is drastic. Although Russia claims that the Kinzhal’s CEP is around 10 meters, leaked images by military analysts show missiles falling with errors of more than 140 meters even in recent attacks. There is no doubt, when a weapon designed to penetrate underground bunkers ends up hitting an open field, the effectiveness of spoofing is demonstrated. In many cases, the missile does not even activate the explosive charge because the impact sequence depends on parameters that are altered by the confusion generated in the guidance system. Night Watch Operators they underline that Lima does not act on a single receiver, but on all of them simultaneously, which nullifies the Russian strategy of multiplying antennas to “jump” between signal sources. Each missile receiver, upon entering the affected area, interprets the false data as valid, which turns spoofing into a kind of “enveloping trap” that is impossible to avoid. A constant evolution. This confrontation between hypersonic missile and spoofing techniques illustrates the character of “cat and mouse” that defines contemporary electronic warfare. Russia adjusts software, redesigns terminal profiles and multiplies antennas, and Ukraine responds by creating systems that replace the entire satellite data constellation by a corrupt flow impossible to filter. In fact, the United States and Western companies are already working on technologies capable of detecting or neutralizing spoofing, as Russia explores more robust guidance systems. For now, however, the electronic advantage is Ukrainian: the weapon that Putin called as “invincible” and “capable of overcoming any Western defense” is falling into empty fields, breaking up in mid-flight, or drifting harmlessly away. At the same time, the technique also affects other russian missiles that transit through the interference zone, expanding the defensive range without the need to intercept one by one. The strategic lesson is clear: in a conflict where Russian industry produces only between 10 and 15 Kinzhales a month, losing them to electronic manipulation is a disproportionate blow to the Kremlin’s offensive capacity. Speed ​​vs information. In short, the confrontation between the Kinzhal and the Lima EW system is a reminder that military superiority no longer depends only on speed, armor or explosive power, but on who controls the flow of information. The missile can fly at Mach 10 and be almost impossible physically intercept, but if its guidance system interprets that it has been “teleported” to Peruall its kinetic energy turns against itself. For Ukraine, this achievement represents the opening of … Read more

We have been believing that bacteria are a weapon against tumors for 150 years. And finally we have discovered how

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In the fight against cancer, there are many treatments that are emerging, being the immunotherapy one of the most innovative, although there are also other alternatives such as based on LED light. Now therapies continue to advance and science is already pointing to a group of bacteria to be able to destroy tumors without depending on the immune response, opening a new era in oncological medicine. It’s not something new. The idea of ​​using bacteria to treat cancer is not new: already in 1868 the German doctor Busch observed that some cancer patients experienced remissions after bacterial infections. Later, William Colby developed bacteria-based treatments that they laid the foundation of modern immunotherapy. However, these traditional therapies require a functional immune system, which is a serious problem for patients who are immunocompromised due to cancer. The present. a study published in Nature Biomedical Engineering presented an innovative “drug-free” strategy that uses a group of bacteria to fight cancer, rescuing this old idea of ​​bacteria against cancer. This treatment has not only demonstrated powerful antitumor efficacy, but it has done so by achieving complete remission of the tumor and, most importantly, it has been maintained for years in mouse models, even in those who are immunosuppressed. The most relevant thing is that the fact that a bacteria helps us with this disease has been achieved without the need to use genetic engineering that alters your RNA. And also, without generating toxicity on the body. A priori they are all advantages. A bacterial duo. The protagonists of this therapy are a bacterial group called AUN, composed of two specific bacteria: Proteus mirabilis (nicknamed A-gyo) and Rhodopseudomonas palustris (UN-gyo). And although we may all have in mind that bacteria are bad for humans, the reality is that They help us (a lot) starting with all those that are in our intestine. When this bacterial duo was administered directly into the blood of tumor-bearing mice, the results were dramatic: complete tumor remission and prolonged survival. And it wasn’t magic. How does it work? It is the obligatory question after seeing the results of this study. The researchers explain that what these bacteria do in short is block the arrival of oxygen and nutrients to the tumors, which literally causes them to suffocate. And a tumor is nothing more than a set of cells that have an advanced metabolism. When taking away their food they end up dead. In essence, these bacteria can reach the tumor and enter its interior, as if it were a Trojan horse. Upon arrival, it causes very small blood clots to form and only in the blood vessels that go to the tumor. In this way, blood clots block the passage of blood and, therefore, its food source. Bacterial transformation. Bacteria are STILL not passive agents, but are dynamic actors that change their behavior when detecting cancer. In this way, the study observed that the A-gyo bacteria undergoes a “wonderful fibrous transformation.” This change is not random. It is specifically activated when the bacteria encounters “oncometabolites“, chemical signals emitted by cancer cells. This highly mobile form of “swarm”, together with the toxins and hemolysins secreted by the consortium, seems to be responsible for the tumor vascular destruction without affecting the rest of the healthy cells. A safe treatment. Using live bacteria as therapy may sound risky, but the study spends much of its time demonstrating the safety and control of AUN. The first thing that has been seen is that the bacterial strains have a unique non-pathogenic profile. Furthermore, to achieve a 100% complete response and avoid the lethality of a single high dose, the researchers developed a “double dose” regimen: a first injection at a low dose, followed days later by a high dose. The low dose “primes” the body, consuming aggressive neutrophils and mitigating the risk of severe cytokine release syndrome. Looking to the future. Although the experiments were performed in mice, the therapy was tested against human cancer cell lines in xenograft models. In this case, cells from human colon adenocarcinoma, ovarian cancer and pancreatic cancer were used. The results in this case were very clear: all the tumors tested successfully disappeared in the mouse models, without very serious side effects. In this way, we are faced with a therapy that does not require any type of drug a priori and that can be self-managed. The authors of the study point out that this approach can revolutionize cancer therapy, but there is still a long way to go. Images | CDC In Xataka | Colon cancers are increasing alarmingly among young people. We have a suspect: sedentary lifestyle

We had been believing that dark matter existed. A new study believes that we were wrong

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For decades, cosmology has been sustained on a pillar as fundamental as mysterious: The dark matter. The invisible glue that, according to the standard model, keeps galaxies together and prevents the stars from being fired by centrifugal force.Represents 27% of the universebut it has a problem: nobody has seen or detected it. It only trusts that it will be there. But now A published study in Galaxies This conception of the concept has changed. The study. Research led by the physicist Rajendra P. Gupta From the University of Ottawa proposes an idea as elegant as radical: what if dark matter does not really exist? According to his work, this ghost component could actually be an ‘illusion’, a side effect caused by something we were assumed: that the fundamental constants of nature are ‘constant’. The importance. To understand the magnitude of this proposal you must first remember the origin of the problem. Specifically, we have to go to the 70s, where astronomer Vera Rubin noticed that the stars at the edges of the galaxies revolved at the same speed those of the center. This completely challenged Newton’s laws, something that is as if a person sitting on the outer edge spinning at the same speed as a sitting near the axis. Physically, it should be triggered. The solution that the scientific community adopted was the existence of a “dark matter”, an invisible mass that generates the extra gravity necessary to maintain cohesive galaxy. This concept became the cornerstone of the cosmological model known as ΛCDM (Lamda-Cold Dark Matter). This model works incredibly well to explain the large -scale universe, but after searches with ultrasensitive detectors and experiments in the LHC We have not found a single particle of dark matter. It has always ‘detected’ indirectly through its gravitational effect on visible objects. The proposal. This is where Gupta’s idea enters. Its model, called CCC + TL (Covarying Couplening Constants + Tirad Light), is based on two different ideas. The first one is the so -called ‘Covriant coupling constants’ (CCC). In this case, the model suggests that the fundamental constants of physics, such as the speed of light (c) or the universal gravitation constant (G), are not fixed. Instead, they evolve and change as the universe expands. This is not a completely new idea (the physicist Paul Dirac already flirted with her), but Gupta integrates it into a complete cosmological model. The second idea raised in the investigation is that of ‘tired light’. A concept that arrives directly from the old hypothesis of ‘tired light’, which postulates that light loses energy throughout its trip through the cosmos. In this case, the Gupta model suggests that the redness of the light of the distant galaxies is not only due to the expansion of the universe but to a combination of both effects. Although the “tired light” as the only explanation, has been widely refuted, its inclusion in this hybrid model is key to its calculations. New terms. Once these two new ideas are taken into account, it is time to modify Einstein’s field equations with these variable constants, the GUPTA model makes new mathematical terms appear. This is something that the author has baptized as “α-material” and “α-energy.” And this is where it is true magic: these terms, which are not a physical substance but an effect of the evolution of the laws of physics, generate the extra gravitational attraction that until now we attributed to dark matter. Dark matter would not be something to find, but a mathematical mirage. It is tested. Something to keep in mind is that theories can be very well written and look very good on paper, but logically they have to demonstrate. For this, Gupta used the SPARC database, a high quality catalog with the rotation curves of 175 galaxies. The method used was the reverse to the traditional. Instead of adding dark matter to justify rotation curves, Gupta took the curves observed and used its model to “subtract” the effect of “α-material”. The result should be the rotation curve generated only by visible (barionic) matter. Something that has wanted to materialize in a graphic taking as an example the NGC3198 galaxy. In this image, the blue line (VO) is the rotation speed observed in the galaxy. The points line (VB) is the speed that should have if only the visible matter existed, according to the estimates of SPARC and the discontinuous line (VBX) is the prediction of visible matter calculated by the GUPTA model. The similarity between the prediction of its model and the estimation of barionic matter is remarkable. Something that the author repeated for several galaxies with promising results to give a very forceful conclusion. A new paradigm. If the CCC+TL model is correct, its implications are huge. Not only would it eliminate the need for dark matter, but, according to the author, it could also explain dark energy and other cosmological enigmas, such as why the first galaxies Observed by James Webb They seem more mature than they should. You have to be cautious. This is, for now, a “proof of concept” as the author himself points out. This means that it is using simplifications, such as treating galaxies as perfect spheres, something that is far from reality in the universe. In addition, its dependence on “tired light” is a friction point with conventional cosmology. Models such as this should demonstrate that they can explain with the same precision as λCDM Key observations such as microwave background radiation or the accelerated expansion of the universe. A new advance. But what is clear with this research is that the scientific community is exploring alternatives, especially when the predominant model presents fissures, such as the absence of a direct proof of dark matter. The Gupta model is, for now, a fascinating possibility. A reminder that in science, the most entrenched truths can be questioned and that the solution to the greatest mysteries of the universe might not be to find something new, but in … Read more

We have been believing that Iran is “five years” from the nuclear bomb. In reality we only know how much uranium enriches

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Few phrases have been as repeated in the geopolitics of the West as “Iran is five years from the nuclear bomb.” For more than three decades, we have heard predictions that place the Iranian regime on the verge of crossing the atomic threshold, a stopwatch that restarts again and again without the prophecy becoming fulfilled. The real problem is not so much what we know about Iran’s nuclear program, as the immensity of what we do not know. And it is in that fog of uncertainty where the most dangerous decisions are cooked. A diffuse red line like Casus Belli. Israeli Prime Minister Benjamin Netanyahu has initiated a war against Iran framed in which the regime is “close to finishing the construction of a nuclear bomb.” This language transforms an old threat into an immediate danger, turning the rhetorical red line into a justification for war. Although the United States initially denies direct participation in the attack, political and military support has gone in crescendo. A Message of President Donald Trump In capital letters, “Iran can’t have a nuclear weapon!”, It works as a blank check for Israel. Thirty years of breached predictions. When a suspicion, and not an evidence, they are a reason for war, it is worth reviewing the newspaper library to put rhetoric in perspective. The feeling of “imminent nuclear bomb” in Iran is not new. It is a political construction that has been managing for decades, with Benjamin Netanyahu as its main architect. In 1992, Netanyahu already warned that Iran was “three or five years” to obtain nuclear weapons. In 2012, he starred in one of his most iconic moments at the UN, drawing a red line with a marker In a cartoon scheme of a pumpand ensuring that they would cross the line in the summer of 2013. Each period has been fulfilled without the weapon becoming materialized. What do intelligence agencies say. Although Israel had in the United States its main political ally, US intelligence agencies did not buy their rhetoric about Iran. In 2007, the National Intelligence Estimate De la CIA concluded with “high confidence” that Iran had stopped its nuclear militarization program, the AMAD Plan. The verification of this break came in 2015 with the Comprehensive Comprehensive Plan Joint (JCPOA), an agreement by which Iran limited uranium enrichment to 3.67% in exchange for the lifting of sanctions. The break that caught the fuse. Paradoxically, the withdrawal of the United States of the JCPOA in 2018, driven by the same rhetoric of the “imminent bomb”, caused the response that was intended to avoid. Iran began to enrich uranium at unprecedented levels: first 20% and then 60%, drastically shortening the theoretical deadlines for the pump and triggering the current crisis. Despite this, there are no evidence, beyond the expansion of enrichment plants, that Iran have the necessary technology or develop those weapons. Although, in honor of the truth, it is logical that there are no, since most of the activity is underground. Faith jump between enrichment and nuclear bomb. To understand how “near” Iran of the nuclear bomb is, you have to differentiate two key processes. The first is the fuel: the enrichment of uranium, the visible part of the process. It is about increasing the concentration of the fistible isotope 2 35 of the uranium from the 0.7% natural to 90% (the arms degree). Thanks to the withdrawal of the JCPOA, Iran accumulates a large amount of 60%enriched uranium. And moving from 60 to 90% is a technically feasible leap within a few weeks. However, Having the fuel is not having the enginewhat Anglo -Saxons call “weaponization.” A set of incredibly complex steps to convert the fistible material into a functional eye that can be mounted on a missile. They have to convert the uranium of arms degree, which is a gas, into a metal sphere. They have to surround that sphere with high precision explosives that have to detonate simultaneously in microseconds to compress the nucleus and start the chain reaction. And all this, in a package small and light enough to fit in the eyes of a missile and survive the launch. This is where we enter the field of almost total uncertainty. We know that this will investigated with the AMAD Plan, but its current progress is unknown. However, nobody knows it with certainty because intelligence on underground activities is very difficult to obtain. What we know with certainty. Despite decades of sanctions, sabotage, selective murders of its scientists and cyberbrains (like the famous Stuxnet, which destroyed uranium centrifuges), the Iranian nuclear program has not only survived, but has become stronger and more self -sufficient. Iran designs and produces its own advanced centrifuging. In fact, Israel’s main objective is to destroy the Fordow plant, that Iran built under a mountain to make it invulnerable to air attacks. In parallel, Iran has developed the largest and diverse ballistic missile program in the Middle East, and a fleet of trucks ready to shoot them. This resilience demonstrates that technical knowledge is deeply institutionalized in the regime, which is why Israel has eliminated those responsible for the nuclear program, as well as Iranian launches. At the same time, each Israeli attack can reinforce the conviction in Tehran that the pump is the only guarantee of survival, a fish that bites the tail, accelerated by Netanyahu’s rhetoric. They will go in the North Korean mirror or Pakistan. Beyond the rhetoric of the West, two countries offer key lessons about Iran. North Korea built its nuclear program to ensure the survival of the regime. Isolated and economically devastated, He saw the bomb as his only insurance policy against a overthrow imposed by the United States. The sanctions and pressure only reinforced their determination. Pakistan followed a strategic imperative. It sought to neutralize the military superiority of India. When India tried her bomb in 1974, the Pakistani bomb became a matter of national survival. Iran is a hybrid and more complex case. Share the survival … Read more

Believing that the healthy lasts less is changing how we eat (and how much we waste)

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Today, knowing how much a food really lasts has become almost a mystery. How much does a pepper in the fridge endure? Why does that apple have been in the fruitman for a week and nobody eats it? Have you spoiled or simply believe it? This confusion could be causing something else, an unnecessary increase in food waste. Short. Many foods come with labels such as “consuming preferably before”, “expiration date”, or even “packaged the …”, which has always been interpreted as a deadline for food security. However, According to EFSA (European Food Security Agency), this type of labeling does not mean that food is not safe after that date, but could lose quality, not security. There is a study behind. Between 2018 and 2024, more than 3,500 consumers from the United States, Canada, the United Kingdom and South Korea participated in an academic study in eight parts, Published in the Journal of Marketing Research. The objective of research was to understand how the perception of “healthy foods” affects their management and consumption. In one of the experiments, scientists asked participants to classify six products (cereals, snack bars, protein bars, yogurt, cookies and fried potatoes) in two categories: those who considered healthier and those who believed they would expire faster. The majority assumed that the food considered “healthier” were the ones who thought they would spoil before. Jeehye Christine Kim, professor at the University of Virginia and co -author of the study, explained it as follows: “This is due to the lack of knowledge about the deterioration of food. Consumers apply what they know about fresh fruits and vegetables to packaged foods, even when it is not logical to do it.” But there is something else. Research has shown that consumers were more likely to throw healthy food as their expiration date approached than to discard less healthy products in the same situation. However, researchers have given him a name: Heuristic Health. An automatic assumption that leads to think that, if a food is healthy, it must also be more perishable. That belief is born from the real experience with fresh fruits and vegetables – which are spoiled quickly – and is erroneously applied to packaged products such as yogurts or bars. To that is added another factor: the fear of making mistakes. As we do not always know how to identify whether a food is still safe or not, and since the labels do not help, we prefer to discard it “just in case.” But that “just in case” has a cost: more wasted food, many times without need. A search to waste less. Researchers suggest that one of the keys to solve this problem is on labeling. As explained by Brent McFerran, professor at Simon Fraser University and Co -author of the study, to The Wall Street Journalboth the food industry and governments must act, since “many perfectly healthy and safe foods for consumption usually throw themselves in the trash due to ignorance of how long they can be consumed without danger.” For its part, EFSA promotes information campaigns so that consumers learn the difference between expiration labels and preferred consumption, and drives manufacturers to improve the clarity of their containers. Beyond choosing healthy. Eating healthy should not mean throwing more food. But while confusion persists on what a date printed in a container really means, thousands of perfectly edible products will continue to end in the trash every day. Understanding what the labels mean, demanding clarity and rethinking our perceptions can have a real impact, not only on our health, but also on the planet. Because choosing healthy should also include taking care of what is not wasted. Image | Dean Hochman Xataka | A squirrel could cross Spain jumping from supermarket in supermarket: how we have obsessed with the purchase

We have been reading about the danger of arsenic in rice for years. So much that we run the risk of not believing it in the worst possible time

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Arsenic is one of the best known toxic elements. The fact that traces of this element can be found in the rice we consume sounds more alarming than it really is: today only very high consumption of this food could involve health risks. The problem is that this can change in the future. Growing concentrations. A new study has pointed out that the increase in temperatures and carbon dioxide concentrations (CO2) in the atmosphere can favor the absorption of arsenic in rice crops. This would translate into a greater presence of the element in the dishes elaborated from this cereal. A change whose impact could be significant around 2050. This increase in arsenic concentration could especially affect the population in Asia, where rice represents a higher portion of the food consumed. “Our results suggest that this increase in arsenic levels could significantly raise the incidence of heart disease, diabetes, and (cause) other non -carcinogenic effects,” he said In a press release Lewis Ziskka, co -author of the study. The risk of arsenic. Arsenic is considered a heavy metal despite chemically belonging to the semimetal group. He Risk level which implies its presence depends on several factors, for example on the fact of the molecular structure in which it occurs (its organic structures are less dangerous than the inorganic ones). And, of course, it depends on the dose. The risk posed by this element has to do with its accumulation in our body. Its presence can lead to problems in development among the youngest, and in adults it has been related to skin disorders, bladder and cancer of lung. 28 Rice varieties. The team responsible for the study analyzed the effects on the rice of an average increase of 2º Celsius at the temperature and the associated increase of atmospheric CO2. Did it in 28 varieties of this cereal, modeling the evolution of its inorganic arsenic content over 10 years. From there, the team estimated the health impacts that this accumulation could produce in the populations of seven Asian countries around 2050. The result: a drastic increase in cancer cases and especially the cases of bladder cancer. Among the countries studied, China would stand out, which could see more than 13 million new cases of cancer associated with arsenic exposure. The details of the study were published In an article In the magazine The Lancet Planetary Health. Not everything is lost. In its study, the team raises some possible adaptation measures dedicated to reducing the future impacts of this problem. The team suggests hybridar varieties of plants to favor those that absorb less, introduce improvements in soil management in rice fields, and improve food processing practices. They also propose consumer -centered measures: education and minitor, they explain, they could play an important role in reducing the impacts of this growing presence of arsenic. The occasional alerts we receive regarding arsenic levels in rice could make this more difficult, by turning this problem into a “Pedro and the Wolf story”: a non -existent problem that we pay attention today could become a real problem that we ignore in the future. In Xataka | What is really happening with white rice (and to what extent should we worry) Image | Shayan Ghiasvand

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