Table 3

Recommended gestational weight gain for pregnant women with different BMI before pregnancy in China24.

BMI before pregnancy classification (kg/m2)

Total gestational weight gain (kg)

Weight gain in the first trimester (kg)

Weekly weight gain in the second and third trimesters [kg, median (range)]

Low body weight (<18.5)

11.0–16.0

≤2

0.46 (0.37–0.56)

Normal body weight (18.5- ​< ​24.0)

8.0–14.0

≤2

0.37 (0.26–0.48)

Overweight (24.0- ​< ​28.0)

7.0–11.0

≤2

0.30 (0.22–0.37)

Obesity (≥28.0)

≤9

≤2

≤0.30