Pregnant women gain weight – even if they eat a healthy and balanced diet.
The weight of the placenta and amniotic fluid is added to the increasing weight of the growing child.
This is why pregnant women usually gain the most weight in the last few months of pregnancy.

There are many opinions on the internet about how many extra pounds are normal for a pregnant woman, some of which are contradictory.
However, there are no generally valid values for weight gain.
Instead, pregnant women should use their pre-conception weight and these values as a guide:

  • BMI < 18.5 before pregnancy: weight gain during pregnancy between 12.5 and 18 kg
  • BMI 18.5 – 24.9 before pregnancy: weight gain between 11.5 and 16 kg
  • BMI 25 – 29.9 before pregnancy: weight gain between 7 and 11.5 kg
  • BMI > 30 before pregnancy: weight gain between 5 and 9 kg