Contraception
Vaginal Ring Stops Ovulation
Published in Women's Health Weekly, June 28th, 2001
The device contains hormones used in other contraceptives, but a ring inserted into the vagina for three weeks of each menstrual cycle delivers them in this study.
The contraceptives are designed to stop ovulation. For ovulation to occur, a woman's ovarian follicles must increase in size before they release the egg. To track the effect of the ring, researchers measured the size of the follicles. If no follicles were increasing in size, then the medicines in the ring were working, no eggs would be released and the contraceptive would work. ...
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