Nutrition
Prenatal Weight Gain Guidance
Prenatal weight gain guidance ties total gain to starting BMI and twin status—obstetric teams set ranges; steady trends beat weekly scale panic.
Prenatal weight gain guidance maps recommended total gain to pre-pregnancy BMI and pregnancy type—underweight, normal, overweight, and twin categories each have different Institute of Medicine-style ranges that obstetric teams personalize. Steady second- and third-trimester curves matter more than weekly scale panic; fluid shifts and constipation blur short-term jumps.
Under-gain risks prematurity; over-gain raises gestational diabetes and hypertension risk.
Common questions
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What if you are not gaining weight in the first trimester?
Nausea-related loss is common early; clinicians watch trend recovery in the second trimester. Report ongoing loss or very low intake—hyperemesis and thyroid issues need medical workup, not silent restriction.
Related terms
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