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.
The Beginning of Menopause So, when does menopause start for most women? There is no set age when menstruation stops as the end of a woman's fertile period is an individual experience. There are averages however. According to the National Institute of Aging the average age that a woman has her last period is 51.