While carcinogenic contaminants are the primary concern, PEG compounds themselves show some evidence of genotoxicity vi,vii and if used on broken skin can cause irritation and systemic toxicity.
The average age of menopause in the United States is about 51. About one out of twenty women have late menopause (after age 55) while another 5% stop having periods between the ages of 40 and 45 (early menopause). The age of menopause is reduced by two years in women who smoke.
Human females experience overt menstruation or a period. The bleeding occurs in the uterus and exits through the vagina in what is known as a monthly menstrual flow. A regular menstruation or period usually lasts from two to eight days starting from the first day of menstrual bleeding until it stops.