Here is part of article I was reading, my guess was actually lower, low dose because pills delivery five times more estrogen:
Studies suggest that oral contraceptives might even protect against colorectal cancer, uterine fibroid tumors, Alzheimer's disease and rheumatoid arthritis.
Taking the pill has always meant an increase in the risk of blood clots, which can cause a stroke. But a woman who does not smoke, does not have high blood pressure, and takes a low-dose oral contraceptive can almost eliminate that additional risk.
So why not just stay on the pill and enjoy all the benefits of hormone-replacement therapy, known as HRT?
Because even low-dose birth-control pills deliver five to seven times as much estrogen as HRT.
HRT simply gives the body back what the ovaries were producing before they were shut down by menopause. The birth control pill delivers a dose of hormones large enough to shut down the ovaries, and it's pointless for a woman to keep taking hormones after menopause has begun and she has stopped ovulating. She would be better off with hormone-replacement therapy, which would provide her with the same benefits but a lower dose of hormone.
"The trick is figuring out when she is in menopause,'' Dr. Lynch said. "There are a couple of ways to test this, but they're not 100 percent reliable. She can go off the pill and see if she's still cycling, but if she's sexually active, there's an outside chance she could get pregnant.
"While it's rare for pregnancy to occur at the age of 50 or 51, it can happen if you're still ovulating.''
Tom Valeo is a freelance writer specializing in medical and health issues. Contact him c/o Seniority, St. Petersburg Times, P.O. Box 1121, St. Petersburg, FL 33731, or e-mail
[email protected].