The first period is a significant moment in the life of a young girl, however, when it happens, the age, plays a much more important role than we realize. National Health Services UK explains that periods can start as early as 8, however the average age is about 12. A new study showcased in the ENDO Annual Meeting 2025, Endocrine Society from Brazil has found that the age a woman gets her first period, also known as menarche, could provide important clues about her future health. The study shows that both starting your period very early or very late can lead to different health problems later in life. Different Risks for Different Ages The age a woman gets her first period (menarche) and the age she reaches menopause mark the beginning and end of her reproductive life. The study looked at data from over 7,600 women in Brazil. It found a link between the timing of menarche and long-term health risks. Early Menarche Women who got their first period before age 10 were more likely to have health issues like obesity, diabetes, high blood pressure, and heart problems. They also had a higher risk of reproductive issues like pre-eclampsia. Late Menarche Women who started their period after age 15 were less likely to be obese. However, they faced a greater risk of menstrual problems and some specific heart conditions. What This Means for Women's Health According to the study's author, Flávia Rezende Tinano, these findings confirm how the timing of puberty can affect a woman's health over many years. She explains that knowing when a woman had her first period can help doctors identify those who might be at a higher risk for certain diseases. This information can lead to more personalized health screenings and preventative care. The study is one of the largest of its kind in a developing country. It provides valuable data for populations, like those in Latin America, that have been underrepresented in past research. The researchers believe that these findings highlight the need for early health education for young girls and women. How Timing Reveals Health Risks For Women A 2013 study published in the Adolescent Health Medicine and Therapeutics journal explained that the timing of these key events can provide important clues about her long-term health. Both very early and very late timing of menarche or menopause have been linked to a higher risk of health problems. Because of this, understanding the connection between these two events could help with preventing chronic diseases. Scientific studies from various fields, including biology, nutrition, and psychology, have looked at the relationship between menarche and menopause. Early or Late Timing Matters: A woman's age at menarche and menopause is a key sign of her body's aging and how her ovaries are functioning. Health Connections: Both starting periods very early or very late are linked to different health and social risks later in life. While many studies have explored the link between menarche and menopause, the results have been mixed. Out of 36 studies reviewed, ten found a direct link, meaning an earlier first period was connected to an earlier menopause. Two studies found the opposite, and the rest found no connection at all. Researchers believe that many things affect the timing of these events, including: Hormones and environmentSocioeconomic statusStress throughout lifeBody size and height