"Natural Family Planning" (NFP) and "rhythm" are terms used by themselves, or interchangeably with the term "Fertility Awareness Methods" (FAM) by the U.S. Dept. of Health & Human Services (HHS), the Centers for Disease Control and Prevention (CDC), Planned Parenthood, the Mayo Clinic, the Cleveland Clinic, WebMD and a number of other US accredited health sources. No distinction based on religion is made between the terms by any of these sources, while advantages and disadvantages of each option are also listed and generally agreed upon.
The research also did not reveal any evidence that women quitting hormonal birth control are not being adequately served by sexual and reproductive health-care providers. That is not to say the problem doesn't exist and there aren't women who are unhappy with hormonal birth control, but at this point, it does not seem to match the widespread documented dissatisfaction and problems of women both in the U.S. and abroad who would like nothing more than to have better access to contraception, hormonal or not.
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