WASHINGTON, March 20 (UPI) -- A book that teaches teenage girls some of the intricacies of fertility charting is stirring debate among parents and educators.
The book "Cycle Savvy: The Smart Teen's Guide to the Mysteries of Her Body," was written by Toni Weschler, author of the bestseller "Taking Charge of Your Fertility."
She says she wrote the teen book after receiving hundreds of letters from women who read her "Taking Charge" book and wished they had had such information earlier, The Washington Post reported.
The Post said the new book has sparked controversy with both abstinence-only supporters and comprehensive sex education advocates who fear the information may lead teens to have unprotected sex.
While the book tells teens how to determine their most fertile days, it doesn't spell out how to chart fertility for birth control, the newspaper said.
Research published by the journal Human Reproduction found that fertility-awareness charting, if done correctly, is only slightly less effective than the pill.
