Pregnancy Weight Gain Calculator
The Pregnancy Weight Gain Calculator estimates a schedule for healthy weight gain based on guidelines from the Institute of Medicine.
Result
The following is a recommended body weight range table for your entire pregnancy period.
| Week | Recommended Weight Range | Recommended Weight Gain |
|---|
Healthy Weight Gain During Pregnancy
Pregnancy requires balanced weight gain to support fetal development and maternal health. The Institute of Medicine recommends these ranges based on pre-pregnancy BMI:
| BMI Category | Singleton Pregnancy | Twins Pregnancy |
|---|---|---|
| Underweight (<18.5) | 28-40 lbs | - |
| Normal (18.5-24.9) | 25-35 lbs | 37-54 lbs |
| Overweight (25-29.9) | 15-25 lbs | 31-50 lbs |
| Obese (≥30) | 11-20 lbs | 25-42 lbs |
Key Components of Pregnancy Weight:
- Baby: 7-8 lbs
- Placenta/fluids: 4-5 lbs
- Maternal changes (blood volume, breast tissue, fat stores): 10-12 lbs
Nutrition Essentials:
✔ Folic acid: Prevents neural defects (leafy greens, citrus)
✔ Iron: Supports blood production (lean meats, beans + vitamin C)
✔ Calcium/Vitamin D: Builds bones (dairy, fortified foods)
✔ Protein: Essential for growth (lean meats, eggs, legumes)
Foods to Avoid:
✖ High-mercury fish (swordfish, tuna)
✖ Raw/undercooked foods
✖ Unpasteurized dairy
✖ Alcohol and excess caffeine
Risks of Improper Weight Gain:
- Underweight: Premature birth, low birth weight
- Overweight: Gestational diabetes, delivery complications
Always consult your healthcare provider for personalized guidance. Small, nutrient-dense meals and moderate exercise support healthy pregnancy outcomes.
This version:
- Uses clear tables for data
- Highlights critical nutrients with icons
- Includes visual warning symbols for risks
- Maintains medical accuracy while being skimmable
- Ends with actionable advice
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