Does caffeine affect fertility?

If you’re more zombie than human without that morning cup of joe, don’t stress it. As long as you’re not consuming super high amounts, caffeine is unlikely to harm your chances of getting pregnant. However, excessive caffeine intake, 300mg or more daily, does connect to higher rates of spontaneous miscarriages, and 600mg of caffeine more than doubles your chance of miscarriage. The magic number for caffeine is 200mg or below, so enjoy your coffee, but keep it to a minimum, mama.