During pregnancy, what weight gain does the American College of Obstetrics and Gynecology recommend for women of ideal body weight?

The American College of Obstetrics and Gynecology (ACOG) recommends that women of ideal body weight gain between 25 to 35 pounds during pregnancy. This recommendation is based on considerations of optimal fetal growth and maternal health. Adequate weight gain within this range supports the healthy development of the fetus and helps provide the necessary nutrients needed for various physiological changes in the mother's body.

Gaining this recommended amount of weight allows for the development of placental and amniotic fluid, contributes to increased blood volume, and provides energy reserves for breastfeeding post-delivery. It’s also associated with a lower risk of preterm delivery and other complications.

Women who gain too little weight run the risk of delivering a low birth weight infant, while excessive weight gain can lead to complications such as gestational diabetes and hypertension. Therefore, the guidelines of 25 to 35 pounds during pregnancy help to balance the needs of both the mother and the developing baby effectively. These established guidelines reflect extensive research into maternal and fetal health dynamics across various populations.