Study: Coffee could increase length of pregnancy

Also can lower infants birth weight, researchers say

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That morning cup of joe could do more harm than expectant mothers may realize.

A new Swedish study found that women who drink more coffee averaged a whole five more hours of pregnancy per 100 mg of caffeine per day. And if that caffiene came from coffee it the time increases to eight hours of pregnancy per 100 mg per day, according to

That fact has some researchers believing that a substance in coffee alone could interfere with pregnancy. They also believe that coffee can lower a baby's birth weight and leave the infant exposed to health problems and complications.

The current recommendation for the World Health Organization is that pregnant women get no more than 300 mg of caffeine per day.

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