Tags: coffee | pregnancy | ivf | fertility

Too Much Coffee Cuts IVF Fertility

Friday, 06 Jul 2012 02:00 PM


Women trying to conceive babies through in-vitro fertilization (IVF) treatment might want to cut back on their coffee breaks. New research has found women who drink five or more cups of coffee a day may significantly reduce their chances of success from IVF.
In fact, Danish investigators who tracked nearly 4,000 women undergoing IVF and other assisted reproductive techniques compared the adverse impact of too much coffee to " the detrimental effect of smoking".
The study, presented at the annual meeting of the European Society of Human Reproduction and Embryology this week, showed consuming five or more cups of coffee a day reduced women’s pregnancy rates by 50 percent and live birth rates by 40 percent.
"Although we were not surprised that coffee consumption appears to affect pregnancy rates in IVF, we were surprised at the magnitude of the effect," said lead researcher Dr. Ulrik Schiøler Kesmodel from the Fertility Clinic of Aarhus University Hospital in Denmark.
Past studies of the impact of coffee on pregnancy have reached conflicting results. Some found caffeinated beverages increase incidence of spontaneous abortion in coffee drinkers, but other studies have not. A 2009 review of multiple studies concluded there was insufficient evidence to confirm or deny the effect of "caffeine avoidance" on pregnancy outcome.
This latest Danish study, which was performed in a large public IVF clinic, tracked 3,959 women undergoing fertility treatment. The analysis showed drinking five or more cups of coffee per day cut the odds of pregnancy in half, but drinking less had no impact.
"There is limited evidence about coffee in the literature," said Kesmodel, "so we would not wish to worry IVF patients unnecessarily. But it does seem reasonable, based on our results and the evidence we have about coffee consumption during pregnancy, that women should not drink more than five cups of coffee a day when having IVF.”



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Women who drink five or more cups of coffee a day reduce their chances of pregnancy through IVF.
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2012-00-06
Friday, 06 Jul 2012 02:00 PM
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