A man’s love of coffee could hamper the success of a couple’s infertility treatment, a small new study suggests. But mild alcohol use by would-be fathers might help boost the odds of pregnancy through in vitro fertilization, the findings indicate. The Boston researchers aren’t ready to encourage men enrolled in IVF to cut coffee consumption and have an extra beer with dinner. Still, these preliminary results were “definitely surprising,” said study co-author Dr. Jorge Chavarro, an assistant professor of nutrition and epidemiology at Harvard School of Public Health in Boston.
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