New research suggests that sound at a specific frequency could help the brain "clean up" deposits associated with Alzheimer's. This non-invasive approach, tested on primates, is attracting the attention of the scientific community.<\/p>\n
Alzheimer's disease is a neurodegenerative disorder characterized by the accumulation of amyloid proteins (\u03b2-amyloid) in the brain, forming plaques that disrupt communication between neurons and contribute to progressive cognitive decline: memory loss, language difficulties, and thinking disorders. These deposits develop well before the onset of clinical symptoms, making any intervention difficult once the disease has manifested.<\/p>\n
A recent study<\/a> , published on January 5, 2026 in Proceedings of the National Academy of Sciences, explored a strategy previously studied mainly in rodents: auditory stimulation at 40 Hz. A team of researchers<\/a> from the Kunming Institute of Zoology exposed nine aged rhesus macaques\u2014which naturally develop amyloid plaques similar to those seen in aging humans\u2014to targeted sound stimulation for one hour a day for seven consecutive days.<\/p>\n After this listening cycle, the levels of amyloid proteins A\u03b242 and A\u03b240 in the monkeys' cerebrospinal fluid increased by approximately 200%, compared to their pre-stimulation state. Researchers interpret this change as a sign that these proteins were cleared from brain tissue into the spinal fluid, which would be consistent with the activation of the brain's natural cleansing mechanisms, particularly the lymphatic system.<\/p>\n What distinguishes this study from previous work is the durability of the effect: high levels of amyloid in the cerebrospinal fluid persisted for more than five weeks after the stimulation was stopped, a feature that had not been observed in studies on mouse models.<\/p>\n The 40 Hz frequency corresponds to a band of brain rhythms called gamma oscillations, involved in cognitive functions such as attention and memory. Previous work had already shown that sensory stimulation at this frequency\u2014visual or auditory\u2014could reduce amyloid deposits in mice genetically modified to mimic Alzheimer's.<\/p>\n The hypothesis is that this stimulation could resynchronize certain neuronal rhythms and activate brain cleaning processes that are otherwise less effective with age or in the context of disease. In monkeys, whose cortex is closer to that of humans than that of rodents, the data obtained confirm the value of exploring this avenue.<\/p>\n Current approved treatments for Alzheimer's\u2014such as monoclonal antibodies\u2014have shown modest effects and can be accompanied by serious side effects, including cerebral edema or hemorrhages. Auditory stimulation at 40 Hz, on the other hand, requires neither injection nor surgery and relies on a simple device that produces a sound at a precise frequency. This makes it potentially applicable at home or in care facilities, with a favorable safety profile.<\/p>\n While these results in primates represent an important step\u2014closer to humans than mouse models\u2014much remains to be understood before widespread clinical application can be considered. At this stage, the observed effects relate to biomarkers linked to protein elimination, not yet direct measures of cognition, memory, or symptom slowing.<\/p>\n Pilot studies in humans<\/a> have already explored sensory stimulation at 40 Hz, but these are still preliminary and require more robust validation to assess their real effectiveness and safety in populations.<\/p>\n In summary, 40 Hz auditory stimulation opens up an intriguing and promising avenue of research in the fight against Alzheimer's disease. By potentially activating the brain's natural cleaning mechanisms, this sound signal could promote the elimination of amyloid proteins\u2014a central component of the disease\u2014without requiring invasive intervention. However, years of research, including in humans, will be needed before it is known whether this approach can become a viable treatment or a complement to existing therapies.<\/p>\n","protected":false},"excerpt":{"rendered":"New research suggests that sound at a specific frequency could help the brain "clean up" deposits associated with...","protected":false},"author":8395,"featured_media":433689,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"disable_msn":false,"footnotes":""},"categories":[5639],"tags":[],"class_list":["post-433680","post","type-post","status-publish","format-standard","has-post-thumbnail","category-bien-etre"],"image":{"medium":["https:\/\/www.ma-grande-taille.com\/wp-content\/uploads\/2026\/01\/KOS-Chiropractic-Integrative-Health-_-Pexels-200x113.jpg",200,113,true],"large":["https:\/\/www.ma-grande-taille.com\/wp-content\/uploads\/2026\/01\/KOS-Chiropractic-Integrative-Health-_-Pexels-500x281.jpg",500,281,true]},"custom":{"td_video":"","featured_image":"https:\/\/www.ma-grande-taille.com\/wp-content\/uploads\/2026\/01\/KOS-Chiropractic-Integrative-Health-_-Pexels.jpg","author":{"name":"Clelia Campardon","avatar":"https:\/\/www.ma-grande-taille.com\/wp-content\/uploads\/2025\/04\/clelia-96x96.jpg"},"categories":[{"term_id":5639,"name":"Well-being","slug":"bien-etre","term_group":0,"term_taxonomy_id":5804,"taxonomy":"category","description":" The Well-being section of The Body Optimist shares practical advice on staying active, sleeping better, managing stress and understanding everyday aches and pains. Written for women of every size and body type, it starts from a simple idea: taking care of your body works best through enjoyment and consistency, not pressure or guilt.<\/p>\n When you return to physical activity, consistency matters more than intensity. A few ways to ease back in:<\/p>\n Everyday movement counts too: walking or biking to get around, taking the stairs and gardening all add up as physical activity.<\/p>\n Here, your body isn't a project to fix. We talk about exercise for pleasure, mood and health, never as a way to \u201cmake up for\u201d a meal or to lose weight, and every tip should work for you whatever your body type. The articles in this section provide general information and do not replace advice from a healthcare professional.<\/p>\n The World Health Organization recommends that adults get at least 150 minutes of moderate-intensity aerobic activity per week, such as brisk walking. It also stresses that some activity is better than none: every session counts, even a short one, and what matters most is finding a pace you can keep up over the long run.<\/p>\n Consistency is the first lever: go to bed and get up at similar times, weekends included. A quiet, dark, cool bedroom, less screen time in the evening and a dinner that isn't too late all make it easier to fall asleep. Loud snoring or waking up gasping for air is worth mentioning to your doctor.<\/p>\n Ongoing fatigue can have many causes: lack of sleep, stress or mental overload, but also iron deficiency, a thyroid disorder or depression. If it lasts several weeks despite rest, or comes with other symptoms, see your doctor to find out what's behind it.<\/p>\n Want to go further? Explore all our topics in the Health section<\/a>, follow moms-to-be in the Pregnancy section<\/a> and enjoy a varied way of eating, without restriction, with the Nutrition section<\/a>.<\/p>","parent":360,"count":1716,"filter":"raw","cat_ID":5639,"category_count":1716,"category_description":" The Well-being section of The Body Optimist shares practical advice on staying active, sleeping better, managing stress and understanding everyday aches and pains. Written for women of every size and body type, it starts from a simple idea: taking care of your body works best through enjoyment and consistency, not pressure or guilt.<\/p>\n When you return to physical activity, consistency matters more than intensity. A few ways to ease back in:<\/p>\n Everyday movement counts too: walking or biking to get around, taking the stairs and gardening all add up as physical activity.<\/p>\n Here, your body isn't a project to fix. We talk about exercise for pleasure, mood and health, never as a way to \u201cmake up for\u201d a meal or to lose weight, and every tip should work for you whatever your body type. The articles in this section provide general information and do not replace advice from a healthcare professional.<\/p>\n The World Health Organization recommends that adults get at least 150 minutes of moderate-intensity aerobic activity per week, such as brisk walking. It also stresses that some activity is better than none: every session counts, even a short one, and what matters most is finding a pace you can keep up over the long run.<\/p>\n Consistency is the first lever: go to bed and get up at similar times, weekends included. A quiet, dark, cool bedroom, less screen time in the evening and a dinner that isn't too late all make it easier to fall asleep. Loud snoring or waking up gasping for air is worth mentioning to your doctor.<\/p>\n Ongoing fatigue can have many causes: lack of sleep, stress or mental overload, but also iron deficiency, a thyroid disorder or depression. If it lasts several weeks despite rest, or comes with other symptoms, see your doctor to find out what's behind it.<\/p>\n Want to go further? Explore all our topics in the Health section<\/a>, follow moms-to-be in the Pregnancy section<\/a> and enjoy a varied way of eating, without restriction, with the Nutrition section<\/a>.<\/p>","cat_name":"Well-being","category_nicename":"bien-etre","category_parent":360}]},"_links":{"self":[{"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/posts\/433680","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/users\/8395"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/comments?post=433680"}],"version-history":[{"count":3,"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/posts\/433680\/revisions"}],"predecessor-version":[{"id":433753,"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/posts\/433680\/revisions\/433753"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/media\/433689"}],"wp:attachment":[{"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/media?parent=433680"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/categories?post=433680"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/tags?post=433680"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} Twice as much amyloid protein in cerebrospinal fluid<\/h2>\n
Why the sound at 40 Hz?<\/h2>\n
A non-invasive approach that complements existing therapies<\/h2>\n
Towards human trials?<\/h2>\n
What you'll find in the Well-being section<\/h2>\n
\n
How do you get back into exercise after a long break?<\/h2>\n
\n
Our approach<\/h2>\n
Articles to get you started<\/h2>\n
\n
Frequently asked questions<\/h2>\n
How much exercise do you need each week?<\/h3>\n
How can you sleep better?<\/h3>\n
Why am I tired all the time?<\/h3>\n
What you'll find in the Well-being section<\/h2>\n
\n
How do you get back into exercise after a long break?<\/h2>\n
\n
Our approach<\/h2>\n
Articles to get you started<\/h2>\n
\n
Frequently asked questions<\/h2>\n
How much exercise do you need each week?<\/h3>\n
How can you sleep better?<\/h3>\n
Why am I tired all the time?<\/h3>\n