The terms menstruation and menses are derived from the Latin mensis 'month', which in turn relates to the ancient Greek mene 'moon' and to the roots of the English words month and moon.

Dec 9, 2022 · The menses phase: This phase begins on the first day of your period. It's when the lining of your uterus sheds through your vagina if pregnancy hasn’t occurred. Most people bleed for three …

Mar 14, 2026 · menstrual cycle, recurring fluctuations in hormone levels that produce physical changes in the uterus and ovaries to prepare the female body for pregnancy. In adult women, the menstrual …

Apr 22, 2023 · Understand how to track your menstrual cycle and what to do about irregularities. Do you know when your last menstrual period began or how long it lasted? If not, it might be time to start …

Aug 17, 2018 · During your period, you release a combination of blood, mucus, and tissue from your uterus. You may have period symptoms like these: The follicular phase starts on the first day of your …

Jan 11, 2026 · Menstruation (or period) happens monthly. As the uterus sheds its lining, vaginal bleeding follows. Menstrual blood is made of blood and tissue.

Dec 2, 2016 · Menstruation (pronounced men-stroo-EY-shuhn) is normal discharge of blood and tissue from the uterine lining through the vagina (see diagram) that occurs as part of a woman's monthly …

Sep 4, 2025 · Menstruation (period blooding) is when the uterus lining sheds and leaves the body as blood, typically lasting three to seven days each month. You can manage menstrual pain and …

Mar 19, 2026 · National measles case counts, including the total number of measles cases reported among international visitors to the United States.

Most people stop getting their period when they’re between 45 and 55 years old — this is called menopause. Menopause can take a few years, and periods usually change gradually during this …