Table 2.

2009 Institute of Medicine Guidelines

Prepregnancy BMI	Total weight gain (kg)	Rate weight gain 2nd/3rd trimester
Low BMI (<18.5)	12.5–18 (28–40 lbs)	0.5 (∼1 lb/week)
Normal BMI (18.5–24.9)	11.5–16 kg (25–35 lbs)	0.4 (1 lb/week)
Overweight BMI (25–29.9)	7–11.5 kg (15–25 lbs)	0.3 (0.66 lb/week)
Obese BMI (≥30)	5–9 kg (11–20 lbs)	0.2 (0.5 lb/week)

BMI, body mass index