nerve

After a marathon day, what if the report doesn’t arrive, feed the kids, walk the dog, go to that Pilates class… And your brain refuses to turn off. You open TikTok or Instagram looking for a distraction and, between dances and recipes, a influencer. Wear a minimalist design device around your neck or clipped to your ear. It promises that with the push of a button and a few small electrical pulses, your anxiety will disappear, you’ll sleep like a baby, and your “brain fog” will lift. they call it “the great reset of the nervous system”. For centuries, the vagus nerve has functioned in complete anatomical obscurity, but today it has achieved an almost mythical status in the wellness ecosystem. According to The New York Timesthere are billions of social media impressions about this nerve. Celebrities like Kelly Ripa and podcasters like Andrew Huberman They praise their virtues. “A lot of this is being driven by influencers saying, ‘Just do this to stimulate your vagus nerve, and all the problems in your life will be solved,’” explains Dr. Kevin Tracey, a neurosurgeon and president of the Feinstein Institutes for Medical Research. It sounds like science fiction, but forecasts suggest that the stimulation of this nerve will generate a billion-dollar industry by 2030. The inevitable question that arises is: can we really “hack” our stress with neck cramps, or are we facing the umpteenth expensive internet placebo? To understand the phenomenon, you must first understand the biology. As explained by the Cleveland Clinicthe vagus nerve (whose name comes from the Latin “wanderer”) is the tenth of the twelve cranial nerves and the longest of all. It arises in the brain stem and winds through the neck, chest, and abdomen, connecting the brain to the heart, lungs, and digestive system. It is the main highway of our parasympathetic nervous system, the one in charge of the “rest and digest” function. Basically, it is the body’s handbrake. When we get stressed, the sympathetic system (the “fight or flight” response) is activated; When the danger passes, the vagus nerve should come into action to calm the pulse and relax the body. But why are people obsessed with electrocuting him? According to the magazine Women’s Healthwe live in an epidemic of chronic stress. The flood of emails, traffic jams and daily pressures cause what is known as “vagal dysfunction.” Our body gets stuck in survival mode and loses the ability to calm down.. The promise of a quick fix has led to the emergence of commercial devices. When faced with the idea of ​​using home electricity, it is normal to wonder if this is dangerous. Generally, the physical answer is no. According to Dr. Michael Kilgard, director of the Texas Biomedical Device Center, interviewed by The New York Timesthe batteries in these commercial devices are too small to burn the skin. The most you feel is tingling. However, the real danger is psychological and medical. “The strangeness of the sensations is annoying enough that people feel like the devices are doing something,” Kilgard warns. In most cases, these gadgets are “probably little more than a placebo disguised as neuroscience“. The risk lies in false hope: patients who spend hundreds of euros on devices that do nothing, delaying medical treatments that have been proven to be effective. To understand the true impact of this false hope, it is vital to separate the wheat from the chaff and define where scientific rigor ends. The line between medicine and marketing wellness The science of Vagus Nerve Stimulation (VNS) is real, fascinating and very complex, but it is light years away from what the marketers sell. influencers. There are real medical devices, but as a comprehensive review article published highlights in the scientific journal Comprehensive Physiologyinvasive stimulation (iVNS) “remains the gold standard with well-documented efficacy.” That is, we are talking about small devices similar to pacemakers that are surgically implanted under the skin of the chest, with cables threaded directly to the nerve. According to Cleveland Clinicthe FDA (the US drug agency) has approved these severe implants to treat cases of resistant epilepsy and severe clinical depression. Medical research continues to advance. A pivotal clinical trial published recently in Nature Medicine (the RESET-RA trial), demonstrated that an implanted neuromodulator system targeting the vagus nerve significantly reduced inflammation in patients with rheumatoid arthritis who were unresponsive to conventional medications. On the other hand, as a review points out from the magazine Exploratory Research and Hypothesis in Medicinethe use of non-invasive stimulators (in the ear or neck) is being intensively studied in clinical settings for rehabilitation after stroke or to slow cognitive decline. But what about the devices that anyone can buy online to “de-stress”? The experts are blunt. Dr. Kristl Vonck, neurologist at Ghent University, warns that consumer devices They are “lightly regulated and do not have to prove to the FDA that they actually work.” Many companies hide behind vague claims about “wellness” to avoid medical controls and use the language of real clinical trials as a mere marketing tactic. Furthermore, as a clinical researcher explains in The Conversationmanipulating the vagus nerve is not a panacea and does not work the same for everyone. Some people in clinical trials experience headaches, worsening migraines, or even a drop in mood when receiving stimulation. “Most diseases involve multiple biological and psychological factors, and no single nerve explains or solves all of them,” he says. Misinformation is not limited to devices; It also covers home diagnostics. The magazine Bustle recently echoed a viral trend on TikTok: the “three drinks” test. Content creators claimed that if you are unable to swallow saliva three times in a row and quickly, your vagus nerve is seriously deregulated due to chronic stress. The therapists had to intervene. Chloë Bean, an expert somatic trauma therapist, clarified that swallowing does involve this nerve, but not being able to do it three times in a row “does not automatically mean that your vagus nerve is stuck.” It … Read more