A recent study has shown how coffee can reduce your fertility.  The study shows that slow waves and contractions of the muscle walls of the fallopian tubes, which helps to transition the egg or ovum toward the uterus or womb, are inhibited by caffeine and thus reduce the chances of conception.

“This provides an intriguing explanation as to why women with high caffeine consumption often take longer to conceive than women who do not consume caffeine,” says Sean Ward, a professor from the University of Nevada School of Medicine, who headed up the study.

A better understanding of the way Fallopian tubes work will help doctors treat pelvic inflammation and sexually-transmitted disease more successfully as well, said Ward, who hopes that the study could help doctors to also understand the causes of ectopic pregnancy.

This study is in line with previous research on caffeine and how it can reduce fertility.  A European multicenter study has previously shown that the consumption of over 501 mg of caffeine in women in the age group of 25-44 years increased by 11% the time it took for them to conceive. A similar study in the United States also revealed that caffeine consumption of over 300 mg decreased the chances of conception by 27%.

Here is a guide as to how much caffiene there is in drinks:

  • One mug of instant coffee: 100mg
  • One mug of filter coffee: 140mg
  • One mug of tea: 75mg
  • One can of cola: 40mg
  • One can of energy drink: 80mg
  • One 50g bar of plain (dark) chocolate: around 50mg
  • One 50g bar of milk chocolate: around 25mg

So, you may want to review your caffeine intake and reduce as appropriate to protect your fertility and chances of conceiving.