Pregnancy Weight Gain | Fit Pregnancy

Pregnancy Weight Gain

Pound Wise

The average pregnant woman is advised to gain no more than 25 to 35 pounds, yet the average newborn weighs only about 7 1/2. So what's with those extra pounds? They're distributed to areas vital to your developing fetus: your uterus, amniotic fluid and placenta, to name a few (see "Where Do the Calories Go?" on the left). But experts say enough is enough.

Weight-Gain Rx Set to Change

Until recently, guidelines for pregnancy weight have focused on helping women gain enough to avoid having babies who weigh too little. But that's about to change, according to participants in a recent Institute of Medicine (IOM) workshop on maternal weight gain.

Watch Your Weight

You may want to keep a close eye on the scale during pregnancy. According to researchers at the University of California, San Francisco, gaining more than the recommended amount (no more than 35 pounds for a normal-weight woman) is associated with worse outcomes in newborns, including lower Apgar scores, seizures, infection, the need for breathing assistance and too-high birth weight. The risk of multiple bad outcomes also increases in moms who gain less than 15 pounds.

Avoiding a Too-Big Baby

Women should lose all the weight they gained during pregnancy before becoming pregnant again, say Missouri researchers. If moms don't drop the pregnancy pounds, or if they gain weight after the first baby, they double the risk their next baby will be too large, increasing their chances for a Cesarean section. "The ideal is to have their weight [at conception] as close to normal as possible," adds study author Robert Blaskiewicz, M.D., a professor at Saint Louis University School of Medicine.

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