On average, you'll need an additional 3,550 calories to safely gain one pound of body weight. If you're looking to put on a pound a week, that's about 500 additional calories a day. Weight gain ...

After that, you should gain about a pound a week — more rapid weight gain could put you at risk. You should consume the most amount of calories (2,400 calories/day) in your third trimester.

recently discussed why he needed to gain weight to play the “Like A Rolling Stone” singer. Jazz Jennings is sharing before-and-after footage of her 100-pound weight loss, saying she is "so ...