Our grandparents even poured vinegar on lentils and fried eggs. Science is now legitimizing them

I don’t know if it’s out of habit or memory, but I’m also one of those people who puts vinegar on lentils. It is an automatic gesture, inherited from my grandmother, who said that “they rested better this way.” For years I thought it was just another hobby from another era, one of those routines that survived more out of nostalgia than science. But it turns out no: vinegar is back, and not just in salads. Networks recover tradition. In both viral videos and cooking shows, vinegar has gone from being a forgotten ingredient to becoming a protagonist. In tiktok either YouTube There are plenty of clips in which users teach the “drip trick” on fried eggs or lentils. Some well-known chefs they have turned it to become fashionable for its ability to balance flavors, just as our grandparents did: to “kill the flavor” of what they didn’t like and enhance what they did. In French cuisine there is a classic dish, oeufs à l’assassin, in which cooks add a splash of vinegar when frying the eggs to intensify the flavor and give creaminess to the yolk. And if we look towards home, in Castilla it was common to add vinegar to both the lentils and the fried egg, a custom that, according to researchers from the Río Hortega Hospital in Valladolidcan even reduce the allergic response to these foods. Acetic acid modifies gastric pH, improves digestion and transforms the allergenicity of certain compounds. So were our grandparents right? What was previously done by intuition — to “kill the flavor” or “settle the stomach” — today has a scientific explanation. Nutritionist Luis Zamora has explained “A splash of vinegar on lentils or having an orange for dessert helps absorb vegetable iron.” The reason is in vitamin C and acidity: both protect non-heme iron—that of plant origin—and facilitate its assimilation. Along the same lines, dietitian Diego Ojeda has assured: “Your grandmother was absolutely right: to help the body understand vegetable iron, you must add vitamin C, like that provided by vinegar or lemon.” In addition, this acidity helps break down antinutrients such as phytic acid, present in legumes and responsible for some of the iron being lost during cooking. In fact, scientific publications match: adding a source of acidity to a meal rich in legumes can multiply up to three the amount of iron absorbed. In studies carried out with cellular and animal modelsvinegar or lemon juice showed similar effects when added to dishes rich in vegetable iron. But nowadays it has become abused. From a minimal splash to a shot. On social networks, thousands of people began to drink “shots of apple cider vinegar” on an empty stomach with the promise of losing weight or “detoxifying” the body. However, the study that popularized that practice It was retracted due to statistical errors, and science has found no solid evidence that vinegar causes weight loss. Experts also warn that excessive consumption of vinegar on an empty stomach can irritate the stomach, damage tooth enamel and cause digestive discomfort. It is not, therefore, about drinking it as if it were a miraculous elixir, but about using it with common sense, as grandparents did: a few drops to enhance flavors, balance dishes and help digestion. The gesture that never left. Perhaps our elders did not talk about antinutrients or bioavailability, but they sensed the essential thing: that vinegar, in addition to giving flavor, helped the body feel better. Today science confirm They weren’t so wrong. That acidic touch that gave character to the lentils or softness to the fried egg has a chemical explanation, a nutritional basis and, above all, an enormous cultural load. Because in the end, between the laboratory and the kitchen, there is the same principle: good traditions do not go out of style, they just needed a good explanation. And every time the vinegar sparkles in the pan or perfumes a stew, we are not only cooking: we are also honoring a way of understanding food, time, and memory. Image | FreePik and FreePik Xataka | Thousands of people have been drinking apple cider vinegar before eating to lose weight for years. An erroneous study is to blame

For years the chicken was the king of protein. Now the beans and lentils want to dethrone it

For decades they told us that the healthy thing was to change red meat by chicken or fish. The recommendation was so assumed that it became a kind of nutritional mantra. However, a change begins to glimpse either on supermarket shelves, gyms or social networks, the word “protein” appears more than ever. And the striking thing is that it is increasingly associated with meat, but plant foods. The question is inevitable: why now the vegetable protein? Vegetable protein in the center. The advisory committee of the United States food guides wants to turn the pyramid. According to a report by The Washington Postfor the first time it is proposed that vegetable proteins have priority. Not even chicken or fish, for years synonymous with healthy food, would occupy that place. Christopher Gardner, a professor at Stanford, summed it up with a simple phrase: “The beans, peas and lentils would lead the list of protein sources.” Red meat would be, on the other hand, in the last position. The evidence that supports this turn. The recommendation does not come from nothing. Rahman, clinical director of Barnard Medical Center, remembered the same media than those who eat more plants have less risk of cancer, diabetes, obesity and even deterioration of memory. In a study, Published in the American Journal of Clinical NutritionThey analyzed some 50,000 women, where they concluded that diets rich in plant proteins favor a healthier aging than those based on animal proteins. Beyond the guides, reality speaks for itself. According to The New York Timeslegumes are a pillar of the Mediterranean diet. A single cup of lentils or beans provides about 15 grams of protein, to which fiber, iron, magnesium, folate and vitamin E should be added. Vegetable or animal? Here the nuance appears. In Men’s Health They point to something that usually goes unnoticed In the middle of the vegetable boom: animal protein still plays with advantage. The reason is how we take advantage of it. Its essential amino acids – that our body cannot manufacture – are absorbed more effectively than those of plant origin. The simplest example is on the plate: 85 grams of chicken add up to 20 grams of protein. The same amount of chickpeas stays at six. Marie Spano, sports dietitian cited by the magazinewarns that those who follow exclusively vegetable diets need more daily total protein. Even so, the solution is to combine legumes, whole grains, nuts and seeds throughout the day. The great nuance: natural vs. ultraprocessed. Not all vegetable proteins are the same and here the most critical point appears. In The New York Times They warn of risk to trust ultra -processed that “disguise” healthy. A clinical trial showed that, even with good nutritional profile on the label, the ultra -processed (including shakes and vegetable meals) They do not offer the same benefits than minimally processed foods. In the study, the participants who followed a diet with little processed foods – fruits, natural yogurt, homemade legumes – lost twice as much weight and body fat that those who consumed “healthy” ultraprocesses such as vegetable lasagers ready to heat or protein smoothies. As the epidemiologist Filippa Juul summarized, cited by the NYT: “Ultraprocesses have less texture, chew faster and stimulate appetite artificially.” The world revolves around protein. The boom is not only nutritional, also cultural and commercial. We live in full “It was protein chic”: Protein has become a symbol of sculpted bodies and aspirational well -being. Social networks such as Tiktok popularize extreme routines, hyperproteic milkshakes and diets that touch the obsession, sometimes linked to eating disorders. The food industry has not been left behind. Product containers “High in protein” They adopt aggressive visual codes, with black and red typefaces designed to attract the male public. A strategy that remembers what happened in its day with the “Light” products in pink, aimed at women worried about weight loss. Protein is no longer just a nutrient: it is marketing, identity and business. So the powder protein? The most recognizable symbol of the protein boom may not be lentils or vegetable hamburgers, but the shake that is stirred in the locker room of any gym. But is it essential? The expert’s response is nuanced. Nutritionist Saray López defends it in Xataka As a practical tool: “It has no contraindications and can help reach daily requirements.” But others, such as the dietitian Jesús Guardiola, They underline this same medium that with a balanced diet it is not necessary to resort to supplements: “The problem is when the shake replaces real food.” Specialists agree that dust protein can be useful in concrete contexts: older people with difficulties in chewing, patients in recovery, who seek to gain muscle mass or even workers who barely have time to eat. But they insist that it is not a universal or magical solution. Everything indicates that it is not a passenger fashion. Protein has become the star of the global food conversation. From the official guides to the shelves of the supermarket, of the fitness routines to the homemade cooking recipes, everything seems to revolve around it. But beyond the boom, the background debate is not only how much protein we eat, but from what sources it comes and how it is processed. Image | Freepik Xataka | Powder protein has become the star accessory of modern well -being. Nutritionists have something to say

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