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S According to a new study by researchers at the University of Dublin, Ireland, pregnant women who drink more than two cups of coffee a day or tea (black or green) run a increased risk of having children.
According to the researchers, the reason is that caffeine restricts blood flow to the placenta thus delaying the baby's growth.
In the study, doctor Ling-Wei Chen examined 941 mothers and infants for whom tea consumption was the main source of caffeine (48%), followed by coffee (38%).
The results obtained suggest that for an additional 100 milligrams of caffeine per day – approximately half a cup of coffee – during the first trimester, the baby tends to weigh less than 700 grams at birth .
This amount of caffeine is still responsible for decreasing the baby's length and skull circumference, as well as his gestational age, which measures the duration of the pregnancy.
Chen stated: "Pregnant women or those who wish to become pregnant should limit their caffeine intake so as not to harm the development of the fetus."
Previously, the World Health Organization Health (WHO) recommended that women consume less than 300 milligrams of caffeine per day during pregnancy.
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