The moon has always fascinated people and fueled numerous beliefs, particularly those surrounding the menstrual cycle. With their nearly identical durations, it's tempting to imagine a link between the two. But what does scientific research actually say? The answers are more nuanced than they might seem.<\/p>\n
The idea that the Moon can influence menstruation is not new. In many cultures, the celestial body is associated with fertility, bodily cycles, and femininity. This theory is based in particular on a simple observation: the lunar cycle lasts approximately 29.5 days, while the menstrual cycle averages 28 days.<\/p>\n
In addition to this, there is another comparison often mentioned: if the Moon affects the tides, why wouldn't it have an effect on our bodies? A hypothesis that has long been considered a myth due to a lack of solid scientific evidence.<\/p>\n
In 2021, a team of German researchers led by chronobiologist Charlotte Helfrich-F\u00f6rster provided new insights. The scientists studied<\/a> data from 22 women who had tracked their menstrual cycles for an average of fifteen years.<\/p>\n Their analysis reveals that a synchronization phenomenon can sometimes occur. In some participants whose cycles lasted more than 27 days, menstruation seemed to temporarily align with the moon's light and gravity cycles. However, this correlation was neither constant nor universal. It appeared periodically and then disappeared, without following an identical pattern from one person to another.<\/p>\n Researchers also observed that this synchronization becomes less frequent with age. Another factor could also play a role: our modern lifestyle. Exposure to artificial light, whether from streetlights or screens, could disrupt biological rhythms that were once more influenced by natural cycles. The periods when synchronization seemed most pronounced coincided with the long winter nights, when moonlight is more prevalent.<\/p>\n While these results are intriguing, they don't allow us to conclude that the moon systematically influences menstruation. The study is based on a limited number of participants, and observations vary considerably from person to person. The authors themselves emphasize that research involving a larger sample will be necessary to better understand these mechanisms and confirm, or refute, the existence of a genuine link.<\/p>\n To date, science has not provided definitive proof of the Moon's influence on the menstrual cycle. Some observations suggest that occasional synchronization may occur in some people, but it remains intermittent and far from widespread.<\/p>\n This question (can the Moon really influence menstruation?) serves as a reminder that the human body is complex and that many factors, such as the environment, light, and biological rhythms, can interact in subtle ways. This is yet another reason to approach these results with curiosity\u2026 without turning a promising hypothesis into a certainty.<\/p>\n","protected":false},"excerpt":{"rendered":"The moon has always fascinated people and fueled numerous beliefs, particularly those surrounding the menstrual cycle. With their...","protected":false},"author":8394,"featured_media":446333,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"disable_msn":false,"footnotes":""},"categories":[5639],"tags":[],"class_list":["post-446308","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\/07\/Lune-influencer-menstruations-200x113.jpg",200,113,true],"large":["https:\/\/www.ma-grande-taille.com\/wp-content\/uploads\/2026\/07\/Lune-influencer-menstruations-500x281.jpg",500,281,true]},"custom":{"td_video":"","featured_image":"https:\/\/www.ma-grande-taille.com\/wp-content\/uploads\/2026\/07\/Lune-influencer-menstruations.jpg","author":{"name":"L\u00e9a Michel","avatar":"https:\/\/www.ma-grande-taille.com\/wp-content\/uploads\/2025\/05\/1721220128171-96x96.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":1718,"filter":"raw","cat_ID":5639,"category_count":1718,"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\/446308","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\/8394"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/comments?post=446308"}],"version-history":[{"count":3,"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/posts\/446308\/revisions"}],"predecessor-version":[{"id":446334,"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/posts\/446308\/revisions\/446334"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/media\/446333"}],"wp:attachment":[{"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/media?parent=446308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/categories?post=446308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ma-grande-taille.com\/en\/wp-json\/wp\/v2\/tags?post=446308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} A link that seems to fade over time<\/h2>\n
Conclusions to be interpreted with caution<\/h2>\n
A fascinating lead, but not a certainty<\/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