The Fertility Diet. This plan was born from the Harvard Nurses' Health Study suggesting that diet plays a role in women's efforts to conceive. The Fertility Diet ($11.99, McGraw-Hill, 2007) identifies particular nutrients women should be getting, such as iron, and avoiding, such as trans fats, to improve their chances of getting pregnant. One big caveat: The 10-step plan wasn't tested on infertile women; it's based on the dietary habits of study participants who were trying to get pregnant. Whether the plan actually helps women conceive is unclear.
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