Weight guidelines for Pregnancy – A woman’s body is made to bear a child. In order to do that, you will have to gain some weight. For most women that weight will ideally be somewhere between fifteen and thirty-five pounds.( see below for the IOM guidelines). You’ll put that amount of weight on in nine months time. No matter how you look at it, that’s a significant amount of weight to gain in that timeframe. Losing that amount of weight would be hard for anyone to lose. The good news, is that the pregnancy weight you will have to lose will go when the baby is born and 6 weeks post-baby. The rest is up to you and how you take care of yourself. You’re left with loose skin, loose muscles and probably a few more lbs. than going into the pregnancy. You may be asking yourself where all of this weight comes from and the answer is that a majority of it comes from the baby itself (7 to 8 pounds) and your increasing muscle tissue and fluid (4 to 7 pounds). Other sources of weight gain are from the placenta and amniotic fluid that protect the baby (3 to 4 pounds); increased size of breasts (approximately one pound); increased size of uterus (2 pounds); increased blood volume (3 pounds); and finally increased body fat (5 or more pounds).
Institute of Medicine 2009 Weight Gain Guidelines
Appropriate Weight Gain
18.5 or less
28 – 40 pounds
18.5 – 24.9
25 – 35 pounds
25 – 29.9
15 – 25 pounds
Greater than 30
11 – 20 pounds
You can easily find your BMI on any online BMI calculator. Use your pre-pregnancy weight in the calculation.
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