Caffeine intake and fertility
No convincing association between caffeine intake and fertility
- The studies addressing time to conception and ovulatory infertility find a modest association of increased time to pregnancy with coffee and tea consumption4. The authors question the validity of these results based on poor study design. They find no support for an association with infertility due to ovulation disorders.
- A Danish study in 20105 fails to observe any adverse effects of caffeine intake on semen quality.
- A further Danish study in 2012 showed little relation between fecundability and caffeine intake6.
- An Australian review paper7 concludes that the evidence is unclear for any relationship between caffeine and sub-fecundity and is insufficient to provide coffee consumption guidelines for preconception advice.