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A small cup of coffee during pregnancy can also affect the weight of the newborn

A small cup of coffee during pregnancy can also affect the weight of the newborn

“The birth weight reduction is within what we see in birth weight reductions among women who smoke during pregnancy,” Gleason said, noting that smokers tend to give babies an average of 1.8 to 7 ounces of non-smokers.

The findings were posted online on March 25th JAMA open network.

While these results are worrisome, pregnant women should not rush to throw away coffee beans, tea bags and diet glues, said Dr. Jill Berkin, an assistant professor of maternal and fetal medicine at the Mount Sinai Health System in New York. City.

Berkin said the results of this study are in contrast to previous studies, which found no significant link between caffeine and fetal growth.

Moreover, the effects of caffeine on the size and weight of the birth seen here were not enormous, Berkin said, so it is difficult to say how long these babies may have long-term health problems. fetal development.

These effects may increase obesity, heart disease, and the risk of developing diabetes later in life, researchers said in a release.

“It was very small, it actually came out with a difference of 3 ounces in body weight. 3 ounces is there to determine if it has a long-term clinical effect on the baby,” Berkin said. “We know that there are worse outcomes with babies with less than one-tenth of the weight expected for pregnancy growth, but not smaller reductions in the potential weight of the fetus, so that’s not clinically significant if it’s really unknown.”

Berkin added that caffeine does not significantly affect a crucial measure of fetal development: abdominal circumference.

“Usually when studying fetal growth, abdominal circumference is probably the most important feature in predicting larger and smaller fetuses,” Berkin said. “In the calculations we use to determine fetal growth, the abdominal circumference weighs more than all other parameters.”

Gleason said there are several theoretical reasons to suspect that caffeine may inhibit fetal growth.

“We know that caffeine and its first metabolite of paraxanthin cross the placenta, but the fetus does not have the enzymes to eliminate or remove caffeine from its system,” Gleason said. As caffeine accumulates in fetal tissues, it can disrupt abdominal growth.

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