For Couples Who Want To Get Pregnant, Men’s Habits Matter, Too

Couples who wish to get pregnant may want to avoid caffeine because it’s associated with an increased risk of miscarriage, a new study from the National Institutes of Health (NIH) suggests.

For women, drinking more than two caffeinated drinks daily before getting pregnant was associated with a 74 percent higher risk of a miscarriage, according to the study published today (March 24) in the journal Fertility and Sterility.

But women’s caffeine consumption wasn’t the only factor: Among couples in which the male partner drank more than two caffeinated beverages daily before conception, there was a 73 percent higher risk of a miscarriage, according to the study.

“Our findings indicate that the male partner matters, too,” Germaine Buck Louis, the director of Intramural Population Health Research at the National Institute of Child Health and Development and lead author on the study, said in a statement. “Male pre-conception consumption of caffeinated beverages was just as strongly associated with pregnancy loss as females’,” Buck Louis said.

The study included 501 couples in Michigan and Texas who had stopped using contraception and were trying to become pregnant. The couples were instructed to keep daily journals of their lifestyle behaviors, including smoking cigarettes and drinking alcohol and caffeinated beverages, according to the study. Couples who got pregnant within a year continued in the study until they gave birth or experienced a miscarriage, according to the study.

Of the 344 couples who became pregnant, 98 experienced a miscarriage, according to the study. Women 35 and older were nearly twice as likely to miscarry as women younger than 35, according to the study.

In addition to the caffeine findings, the researchers also found that women who took a daily multivitamin before and during pregnancy were less likely to have a miscarriage. Women who took a daily multivitamin before —> Read More

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