{"componentChunkName":"component---src-components-article-page-article-page-gatsby-container-tsx","path":"/articles/life-stages/when-does-menstruation-begin","result":{"data":{"articleNode":{"id":"23Wm7BdBGoYiigoM8Suw82","title":"When does menstruation begin?","subtitle":null,"seoMetaTitle":"When do periods start?","seoMetaDescription":"Age at menarche varies across countries, races, and communities. Menarche usually begins between the ages of 9–15, about two years after the onset of puberty. ","openGraphTitle":"When does menstruation begin?","openGraphDescription":"Age at menarche varies across countries, races, and communities. Menarche usually begins between the ages of 9–15, about two years after the onset of puberty. ","slug":"life-stages/when-does-menstruation-begin","artCredits":"Illustration by Emma Günther","publishDate":"2017-02-08T00:00+01:00","updatedAt":"2022-08-17T13:15:57.704Z","createdAt":"2018-02-14T12:12:24.539Z","locale":"en","authors":[{"id":"53XXDZWUHSYKw4IQukGcG","name":"Anna Druet, BA","headline":"Science writer","slug":"anna-druet","twitter":null,"locale":"en","profileImage":{"id":"hOkf6TtNjqK8cwKY6uk0O","description":"portrait of anna druet","file":{"contentType":"image/png","url":"//images.ctfassets.net/juauvlea4rbf/hOkf6TtNjqK8cwKY6uk0O/968784f20b401b7217442fc6a0ce54a4/Anna_Druet.png"},"gatsbyImageData":{"images":{"sources":[{"srcSet":"https://images.ctfassets.net/juauvlea4rbf/hOkf6TtNjqK8cwKY6uk0O/968784f20b401b7217442fc6a0ce54a4/Anna_Druet.png?w=225&h=225&q=50&fm=webp 225w,\nhttps://images.ctfassets.net/juauvlea4rbf/hOkf6TtNjqK8cwKY6uk0O/968784f20b401b7217442fc6a0ce54a4/Anna_Druet.png?w=450&h=450&q=50&fm=webp 450w,\nhttps://images.ctfassets.net/juauvlea4rbf/hOkf6TtNjqK8cwKY6uk0O/968784f20b401b7217442fc6a0ce54a4/Anna_Druet.png?w=900&h=900&q=50&fm=webp 900w","sizes":"(min-width: 900px) 900px, 100vw","type":"image/webp"}],"fallback":{"src":"https://images.ctfassets.net/juauvlea4rbf/hOkf6TtNjqK8cwKY6uk0O/968784f20b401b7217442fc6a0ce54a4/Anna_Druet.png?w=900&h=900&q=50&fm=png","srcSet":"https://images.ctfassets.net/juauvlea4rbf/hOkf6TtNjqK8cwKY6uk0O/968784f20b401b7217442fc6a0ce54a4/Anna_Druet.png?w=225&h=225&q=50&fm=png 225w,\nhttps://images.ctfassets.net/juauvlea4rbf/hOkf6TtNjqK8cwKY6uk0O/968784f20b401b7217442fc6a0ce54a4/Anna_Druet.png?w=450&h=450&q=50&fm=png 450w,\nhttps://images.ctfassets.net/juauvlea4rbf/hOkf6TtNjqK8cwKY6uk0O/968784f20b401b7217442fc6a0ce54a4/Anna_Druet.png?w=900&h=900&q=50&fm=png 900w","sizes":"(min-width: 900px) 900px, 100vw"}},"layout":"constrained","backgroundColor":"#f8f8f8","width":900,"height":900}}}],"reviewers":null,"editors":null,"featuredImage":{"description":"White underwear with blood stain","file":{"contentType":"image/png","url":"//images.ctfassets.net/juauvlea4rbf/EQoqDuxqTeiW8gAS884ea/adea152487f8a8dab77ba0757685b804/When-does-menstruation-begin_2x.png"},"gatsbyImageData":{"images":{"sources":[{"srcSet":"https://images.ctfassets.net/juauvlea4rbf/EQoqDuxqTeiW8gAS884ea/adea152487f8a8dab77ba0757685b804/When-does-menstruation-begin_2x.png?w=240&h=120&q=50&fm=webp 240w,\nhttps://images.ctfassets.net/juauvlea4rbf/EQoqDuxqTeiW8gAS884ea/adea152487f8a8dab77ba0757685b804/When-does-menstruation-begin_2x.png?w=480&h=241&q=50&fm=webp 480w,\nhttps://images.ctfassets.net/juauvlea4rbf/EQoqDuxqTeiW8gAS884ea/adea152487f8a8dab77ba0757685b804/When-does-menstruation-begin_2x.png?w=960&h=481&q=50&fm=webp 960w,\nhttps://images.ctfassets.net/juauvlea4rbf/EQoqDuxqTeiW8gAS884ea/adea152487f8a8dab77ba0757685b804/When-does-menstruation-begin_2x.png?w=1920&h=962&q=50&fm=webp 1920w","sizes":"(min-width: 960px) 960px, 100vw","type":"image/webp"}]},"layout":"constrained","backgroundColor":"#e83838","width":960,"height":481}},"openGraphImage":{"description":"","file":{"url":"//images.ctfassets.net/juauvlea4rbf/50kzQURtDOiXC3qpEfvPzp/4ddcb58fcdc32f24a140ab388a7c5912/When-does-menstruation-begin_2x.png"}},"sectionDivider":null,"featuredVideoURL":null,"category":{"id":"4ToHluhsBlWdUriNQolB83","slug":"puberty","title":"Puberty","color":null,"description":{"description":"Articles about Puberty."},"parentCategory":{"title":"Menstrual Cycle","slug":"menstrual-cycle"},"locale":"en"},"body":{"body":"Puberty is a time when the body becomes more “adult” and prepares for the possibility of becoming pregnant. Menstruation (getting your period) is one of the later developments of puberty. The medical word for the age or date of someone’s first period (menstruation) is *menarche*. When do periods start?\n\n## What’s average?\nMenarche usually begins between the ages of 9–15, about two years after the onset of puberty. The average age of menarche is 12–13, but it can be normal for it to happen earlier or later (1). Age at menarche varies across countries, races and communities (1, 2). The whole process of puberty tends to last about 2–5 years (3).\n\nThe average age of menarche declined over several decades leading into the mid-20th century. This is likely due to better nutrition, hygiene and more availability of food (4). More recent declines in the age of menarche may be due to increasing obesity rates, changing diets and other factors, such as environmental contaminants (2, 5). The age when breasts start to bud in girls (the first obvious sign of puberty) has declined more than the age of menarche in recent years (6). This has led to a longer gap between breast budding and menarche and a longer pubertal duration for some young people. More research is needed to understand why and to what extent, these changes are happening.\n\n## Why doesn’t everyone get their period at the same age?\nThe timing of menarche is influenced by a person’s genes (family history), behavior and environment. Genes likely play the biggest role — about 60–80% (6, 7). For African Americans, an earlier age at menarche may also be a result of genetic factors, including genes associated with body weight (7) (socioeconomic factors also play a role (8)).\n\n![age menarche contentful@2x](//images.contentful.com/juauvlea4rbf/4AbXmKoUE8O0ISUe2gcOUm/bf8e90962701acda5f785ee00663cefd/age_menarche_contentful_2x.png)\n\n## Earlier menarche\nBeyond genes, diet can play a big role in when someone’s period starts. People with a high body mass index (BMI) are more likely to reach menarche earlier (9). Even a person’s BMI as a toddler may be a factor. Menstruation tends to come earlier in people who eat more animal protein and in those who consume more caffeinated and/or sugary drinks, like energy drinks and soda (8, 10–13). Reaching menarche at a younger age can impact health later on in life — another reason why it’s important to eat well and maintain a healthy weight when possible.\n\nExposure to certain environmental hazards, in-utero and in early childhood, may also lead to an earlier age at menarche. This may include a high level of exposure to DDT and certain pesticides (14).\n\n## Later menarche\nLater menarche is more common in people who are thin/have a low BMI. A low BMI may be genetic, or due a medical condition causing weight loss or low energy intake, such as anorexia or a gastrointestinal condition (15, 16). Later menarche is seen in teens who live in a places without enough to eat, have nutritional deficiencies or are extremely picky eaters (17). People who do intensive physical exercise on a regular basis also tend to reach menarche later — especially sports that promote a lean body size, such as ballet, gymnastics and distance runners (18). Nutritional and exercise factors tend to delay the onset of menstruation by an average of about a year (18).\n\nMenarche may also be delayed by certain early psychological experiences (19), and exposure to certain environmental hazards, such as lead (14).\n\nBut, like most things — there is a range of ages for “normal” puberty to occur. It can be perfectly okay and healthy for someone to begin menstruating later than the average (17). The American Association of Obstetrics and Gynecology recommends checking in with a doctor if menstruation hasn’t started by age 15, or by age 14 when paired with intense exercise or hirsutism (excess hair growth on the face, chest or back).\n\nAdolescents who have or have not started menstruating should aim to have a check-up with an OB/GYN between the ages of 13 and 15.\n\nIn the coming weeks we’ll be publishing a practical guide to getting puberty and first periods, to make navigating these changes a bit easier.\n\nThe information found in Clue can help ease any awkwardness when talking to young people about periods. [Download Clue today.](https://xq5r.app.link/CZUkw9PrBA)"},"bodyRichText":{"raw":"{\"data\":{},\"content\":[{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"Puberty is a time when the body becomes more “adult” and prepares for the possibility of becoming pregnant. Menstruation (getting your period) is one of the later developments of puberty. The medical word for the age or date of someone’s first period (menstruation) is \",\"nodeType\":\"text\"},{\"data\":{},\"marks\":[{\"type\":\"italic\"}],\"value\":\"menarche\",\"nodeType\":\"text\"},{\"data\":{},\"marks\":[],\"value\":\". When do periods start?\",\"nodeType\":\"text\"}],\"nodeType\":\"paragraph\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"What’s average?\",\"nodeType\":\"text\"}],\"nodeType\":\"heading-2\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"Menarche usually begins between the ages of 9–15, about two years after the onset of puberty. The average age of menarche is 12–13, but it can be normal for it to happen earlier or later (1). Age at menarche varies across countries, races and communities (1, 2). The whole process of puberty tends to last about 2–5 years (3).\",\"nodeType\":\"text\"}],\"nodeType\":\"paragraph\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"The average age of menarche declined over several decades leading into the mid-20th century. This is likely due to better nutrition, hygiene and more availability of food (4). More recent declines in the age of menarche may be due to increasing obesity rates, changing diets and other factors, such as environmental contaminants (2, 5). The age when breasts start to bud in girls (the first obvious sign of puberty) has declined more than the age of menarche in recent years (6). This has led to a longer gap between breast budding and menarche and a longer pubertal duration for some young people. More research is needed to understand why and to what extent, these changes are happening.\",\"nodeType\":\"text\"}],\"nodeType\":\"paragraph\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"Why doesn’t everyone get their period at the same age?\",\"nodeType\":\"text\"}],\"nodeType\":\"heading-2\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"The timing of menarche is influenced by a person’s genes (family history), behavior and environment. Genes likely play the biggest role — about 60–80% (6, 7). For African Americans, an earlier age at menarche may also be a result of genetic factors, including genes associated with body weight (7) (socioeconomic factors also play a role (8)).\",\"nodeType\":\"text\"}],\"nodeType\":\"paragraph\"},{\"data\":{\"target\":{\"sys\":{\"id\":\"4AbXmKoUE8O0ISUe2gcOUm\",\"type\":\"Link\",\"linkType\":\"Asset\"}}},\"content\":[],\"nodeType\":\"embedded-asset-block\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"Earlier menarche\",\"nodeType\":\"text\"}],\"nodeType\":\"heading-2\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"Beyond genes, diet can play a big role in when someone’s period starts. People with a high body mass index (BMI) are more likely to reach menarche earlier (9). Even a person’s BMI as a toddler may be a factor. Menstruation tends to come earlier in people who eat more animal protein and in those who consume more caffeinated and/or sugary drinks, like energy drinks and soda (8, 10–13). Reaching menarche at a younger age can impact health later on in life — another reason why it’s important to eat well and maintain a healthy weight when possible.\",\"nodeType\":\"text\"}],\"nodeType\":\"paragraph\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"Exposure to certain environmental hazards, in-utero and in early childhood, may also lead to an earlier age at menarche. This may include a high level of exposure to DDT and certain pesticides (14).\",\"nodeType\":\"text\"}],\"nodeType\":\"paragraph\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"Later menarche\",\"nodeType\":\"text\"}],\"nodeType\":\"heading-2\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"Later menarche is more common in people who are thin/have a low BMI. A low BMI may be genetic, or due a medical condition causing weight loss or low energy intake, such as anorexia or a gastrointestinal condition (15, 16). Later menarche is seen in teens who live in a places without enough to eat, have nutritional deficiencies or are extremely picky eaters (17). People who do intensive physical exercise on a regular basis also tend to reach menarche later — especially sports that promote a lean body size, such as ballet, gymnastics and distance runners (18). Nutritional and exercise factors tend to delay the onset of menstruation by an average of about a year (18).\",\"nodeType\":\"text\"}],\"nodeType\":\"paragraph\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"Menarche may also be delayed by certain early psychological experiences (19), and exposure to certain environmental hazards, such as lead (14).\",\"nodeType\":\"text\"}],\"nodeType\":\"paragraph\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"But, like most things — there is a range of ages for “normal” puberty to occur. It can be perfectly okay and healthy for someone to begin menstruating later than the average (17). The American Association of Obstetrics and Gynecology recommends checking in with a doctor if menstruation hasn’t started by age 15, or by age 14 when paired with intense exercise or hirsutism (excess hair growth on the face, chest or back).\",\"nodeType\":\"text\"}],\"nodeType\":\"paragraph\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"Adolescents who have or have not started menstruating should aim to have a check-up with an OB/GYN between the ages of 13 and 15.\",\"nodeType\":\"text\"}],\"nodeType\":\"paragraph\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"In the coming weeks we’ll be publishing a practical guide to getting puberty and first periods, to make navigating these changes a bit easier.\",\"nodeType\":\"text\"}],\"nodeType\":\"paragraph\"},{\"data\":{},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"The information found in Clue can help ease any awkwardness when talking to young people about periods. \",\"nodeType\":\"text\"},{\"data\":{\"uri\":\"https://app.adjust.com/ytidk4\"},\"content\":[{\"data\":{},\"marks\":[],\"value\":\"Download Clue today.\",\"nodeType\":\"text\"}],\"nodeType\":\"hyperlink\"},{\"data\":{},\"marks\":[],\"value\":\"\",\"nodeType\":\"text\"}],\"nodeType\":\"paragraph\"}],\"nodeType\":\"document\"}","references":[{"__typename":"ContentfulAsset","contentful_id":"4AbXmKoUE8O0ISUe2gcOUm","id":"4AbXmKoUE8O0ISUe2gcOUm","description":"","file":{"contentType":"image/png","url":"//images.ctfassets.net/juauvlea4rbf/4AbXmKoUE8O0ISUe2gcOUm/bf8e90962701acda5f785ee00663cefd/age_menarche_contentful_2x.png"},"gatsbyImageData":{"images":{"sources":[{"srcSet":"https://images.ctfassets.net/juauvlea4rbf/4AbXmKoUE8O0ISUe2gcOUm/bf8e90962701acda5f785ee00663cefd/age_menarche_contentful_2x.png?w=300&h=150&q=50&fm=webp 300w,\nhttps://images.ctfassets.net/juauvlea4rbf/4AbXmKoUE8O0ISUe2gcOUm/bf8e90962701acda5f785ee00663cefd/age_menarche_contentful_2x.png?w=601&h=301&q=50&fm=webp 601w,\nhttps://images.ctfassets.net/juauvlea4rbf/4AbXmKoUE8O0ISUe2gcOUm/bf8e90962701acda5f785ee00663cefd/age_menarche_contentful_2x.png?w=1201&h=601&q=50&fm=webp 1201w","sizes":"(min-width: 1201px) 1201px, 100vw","type":"image/webp"}],"fallback":{"src":"https://images.ctfassets.net/juauvlea4rbf/4AbXmKoUE8O0ISUe2gcOUm/bf8e90962701acda5f785ee00663cefd/age_menarche_contentful_2x.png?w=1201&h=601&q=50&fm=png","srcSet":"https://images.ctfassets.net/juauvlea4rbf/4AbXmKoUE8O0ISUe2gcOUm/bf8e90962701acda5f785ee00663cefd/age_menarche_contentful_2x.png?w=300&h=150&q=50&fm=png 300w,\nhttps://images.ctfassets.net/juauvlea4rbf/4AbXmKoUE8O0ISUe2gcOUm/bf8e90962701acda5f785ee00663cefd/age_menarche_contentful_2x.png?w=601&h=301&q=50&fm=png 601w,\nhttps://images.ctfassets.net/juauvlea4rbf/4AbXmKoUE8O0ISUe2gcOUm/bf8e90962701acda5f785ee00663cefd/age_menarche_contentful_2x.png?w=1201&h=601&q=50&fm=png 1201w","sizes":"(min-width: 1201px) 1201px, 100vw"}},"layout":"constrained","backgroundColor":"#f8c8c8","width":1201,"height":601}}]},"references":{"references":"1. Yermachenko A, Dvornyk V. Nongenetic determinants of age at menarche: a systematic review. BioMed research international. 2014 Jun 23;2014.\n2. Parent AS, Teilmann G, Juul A, Skakkebaek NE, Toppari J, Bourguignon JP. The timing of normal puberty and the age limits of sexual precocity: variations around the world, secular trends, and changes after migration. Endocrine reviews. 2003 Oct 1;24(5):668–93.\n3. Lee PA: Normal ages of pubertal events among American males and females. J Adolesc Health Care 1:26, 198\n4. Wyshak G, Frisch RE. Evidence for a secular trend in age of menarche. New England Journal of Medicine. 1982 Apr 29;306(17):1033–5.\n5. McDowell MA, Brody DJ, Hughes JP. Has age at menarche changed? Results from the National Health and Nutrition Examination Survey (NHANES) 1999–2004. Journal of Adolescent Health. 2007 Mar 31;40(3):227–31.\n6. Martí-Henneberg C, Vizmanos B. The duration of puberty in girls is related to the timing of its onset. The Journal of pediatrics. 1997 Oct 31;131(4):618–21.\n7. Demerath EW, Liu CT, Franceschini N, Chen G, Palmer JR, Smith EN, Chen CT, Ambrosone CB, Arnold AM, Bandera EV, Berenson GS. Genome-wide association study of age at menarche in African-American women. Human molecular genetics. 2013 Aug 15;22(16):3329–46.\n8. Krieger, N., Kiang, M. V., Kosheleva, A., Waterman, P. D., Chen, J. T., & Beckfield, J. (2015). Age at menarche: 50-year socioeconomic trends among US-born black and white women. American Journal of Public Health, 105(2), 388–397.\n8. Buyken AE, Karaolis-Danckert N, Remer T. Association of prepubertal body composition in healthy girls and boys with the timing of early and late pubertal markers. The American journal of clinical nutrition. 2009;89(1):221–30.\n10. Rogers, I. S., Northstone, K., Dunger, D. B., Cooper, A. R., Ness, A. R., & Emmett, P. M. (2010). Diet throughout childhood and age at menarche in a contemporary cohort of British girls. Public Health Nutrition, 13(12), 2052–2063.\n11. Moisan, J., Meyer, F., & Gingras, S. (1990). Diet and age at menarche. Cancer Causes & Control, 1(2), 149–154.\n12. Villamor, E., & Jansen, E. C. (2016). Nutritional determinants of the timing of puberty. Annual Review of Public Health, 37, 33–46.\n13. Carwile, J. L., Willett, W. C., Spiegelman, D., Hertzmark, E., Rich-Edwards, J., Frazier, A. L., & Michels, K. B. (2015). Sugar-sweetened beverage consumption and age at menarche in a prospective study of US girls. Human Reproduction, deu349.\n14. Toppari J, Juul A. Trends in puberty timing in humans and environmental modifiers. Molecular and cellular endocrinology. 2010 Aug 5;324(1):39–44.\n15. Martos-Moreno GA, Chowen JA, Argente J. Metabolic signals in human puberty: effects of over and undernutrition. Molecular and cellular endocrinology. 2010 Aug 5;324(1):70–81.\n16. Leffler DA, Green PH, Fasano A (Oct 2015). “Extraintestinal manifestations of coeliac disease”. Nat Rev Gastroenterol Hepatol (Review). 12 (10): 561–71. doi:10.1038/nrgastro.2015.131. PMID 26260366\n17. Wei C, Crowne EC. Recent advances in the understanding and management of delayed puberty. Archives of disease in childhood. 2016 May 1;101(5):481–8.\n18. Valentino R, Savastano S, Tommaselli AP, D’amore G, Dorato M, Lombardi G. The influence of intense ballet training on trabecular bone mass, hormone status, and gonadotropin structure in young women. The Journal of Clinical Endocrinology & Metabolism. 2001 Oct 1;86(10):4674–8.\n19. Ge X, Natsuaki MN. In search of explanations for early pubertal timing effects on developmental psychopathology. Current directions in psychological science. 2009 Dec 1;18(6):327–31."},"partnerships":null,"relatedArticles":null,"articleFooterDownloadWidgetText":null},"recommendedArticles":{"edges":[{"node":{"id":"72SNBJNXIQqOKEG6yi6M8K","title":"Signs your period is coming for the first time and how to prepare","slug":"life-stages/when-will-i-get-my-first-period","snippet":"Your body may give you a few clues as to when your period is going to start.","locale":"en","publishDate":"2024-09-16T00:00+01:00","authors":[{"id":"3ZKopcyMH8pJLSQZjhs5mo","name":"Bridgette Holmes, CNM","headline":"Science writer","slug":"bridgette-holmes","twitter":null,"locale":"en","profileImage":{"id":"3USKkkxsgnIYwgyyetPfh3","description":"Bridgette is an actively practicing certified nurse-midwife with a special interest in increasing reproductive health literacy.\n","file":{"contentType":"image/png","url":"//images.ctfassets.net/juauvlea4rbf/3USKkkxsgnIYwgyyetPfh3/d73629d723e4ee7adc0f6ad7cdf37c09/Author_image.png"},"gatsbyImageData":{"images":{"sources":[{"srcSet":"https://images.ctfassets.net/juauvlea4rbf/3USKkkxsgnIYwgyyetPfh3/d73629d723e4ee7adc0f6ad7cdf37c09/Author_image.png?w=225&h=225&q=50&fm=webp 225w,\nhttps://images.ctfassets.net/juauvlea4rbf/3USKkkxsgnIYwgyyetPfh3/d73629d723e4ee7adc0f6ad7cdf37c09/Author_image.png?w=450&h=450&q=50&fm=webp 450w,\nhttps://images.ctfassets.net/juauvlea4rbf/3USKkkxsgnIYwgyyetPfh3/d73629d723e4ee7adc0f6ad7cdf37c09/Author_image.png?w=900&h=900&q=50&fm=webp 900w","sizes":"(min-width: 900px) 900px, 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