Average age of menarche (first period)?
12.43 years old in the USA. (In Europe the average age of menarche has decreased rapidly from 17 in 1850 to 13 in 1970. It has stayed relatively stable since then).
Average amount of blood I lose when menstruating?
2.4 tablespoons (35ml) of total menstrual fluid will usually be lost, however anything between 1 and 6 tablespoons (80ml) is normal. Nine out of ten women lose less than 80ml each cycle. As a guide, a regular tampon fully soaked will hold about 5ml of menstrual fluid. Only about half of menstrual fluid is blood (the rest is cervical mucus, vaginal secretions and endometrial tissue).
Average age of menopause?
51 years old in the West. The average age of menopause in developing nations is younger (between 44-47 years old). The symptoms of menopause last from 4-6 years.
Average number of years I’ll spend menstruating?
37 years in Western countries (if women start at age 12, stop at age 51, and have two full-term pregnancies).
How many times will I menstruate in my lifetime?
About 460 times.
How much menstrual blood will I lose in one year?
About 450 ml, which is a little more than this kid’s size coca cola cup:
How much menstrual fluid will I lose in a lifetime?
16 litres (that is three times the amount of blood in our body, because the human body contains an average of 5 litres of blood). The same amount as 31 x 520g bottles of tomato sauce: