Pregnancy Weight Gain

Healthy pregnancy weight gain depends on pre-pregnancy BMI (Body Mass Index). Standard guidelines from Institute of Medicine (IOM): underweight women gain more, obese less. Twin pregnancies: significantly more gain expected. Too little gain = small baby risk. Excess gain = gestational diabetes, hypertension, difficult delivery risk.

Details

Single baby weight gain (BMI-based):

• Underweight (BMI<18.5): 12.5-18 kg
• Normal (18.5-24.9): 11.5-16 kg
• Overweight (25-29.9): 7-11.5 kg
• Obese (30+): 5-9 kg

Twin pregnancies: add 5-9 kg to each category.

Tips

• 1st trimester: 0.5-2 kg total
• 2nd & 3rd trimester: 0.4-0.6 kg/week
• Track weight weekly, same time, same scale
• Don't diet during pregnancy unless doctor advises
• Stay hydrated, balanced diet, prenatal vitamins

FAQs

Gaining too fast?

Talk to OB — may suggest dietary changes. Risks: gestational diabetes, preeclampsia, large baby.

Not gaining enough?

Risk for low birth weight, preterm labor. Consult doctor for nutrition guidance, supplements if needed.

Postpartum weight loss?

Average 6-9 kg lost at delivery (baby, fluid, placenta). Rest returns gradually over 6-12 months with healthy diet and breastfeeding.