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.
8 Things Every Woman Should've Learned About Her Period (But Never Did) Menstruation is a part of most women's lives for years (and years): Menopause typically begins around age 50, and girls in the U.S. tend to get their periods somewhere between 12 and 13 -- although puberty is beginning at younger and younger ages.