Menstrual periods are arriving earlier for younger generations, especially among racial minority and lower-income individuals

The average age at menarche -- the first menstrual period -- has been decreasing among younger generations in the U.S., especially those belonging to racial minorities and lower socioeconomic statuses, according to a new study. It also found that the average time it takes for the menstrual cycle to become regular is increasing.

https://www.sciencedaily.com/releases/2024/05/240529144225.htm