Gaining weight is a natural part of pregnancy. It helps your baby grow and develop, and prepares you for breastfeeding.
How much weight you should gain depends on your Body Mass Index before you became pregnant (your pre-pregnancy BMI).
Find out your pre-pregnancy BMI and your recommended weight gain at healthcanada.gc.ca/pregnancy-calculator and talk to your health care provider.
Based on my pre-pregnancy BMI (___), my recommended weight gain is between __ and ___
Most of this weight gain will happen in the second and third trimesters, as your baby and the tissues that support your pregnancy continue to grow.
Here's an example:
Sarah's pre-pregnancy BMI: 23
Her recommended weight gain: 11.5-16 kg (25 to 35 lbs)
Extra blood, fluids and protein: 3.5 kg
Breasts and energy stores: 3 kg
Uterus: 1 kg
Placenta: 1 kg
Baby: 3.5 kg
Amniotic fluid: 1 kg
Sarah's total weight gain in 40 weeks: 13 kg (29 lbs)
Gaining a healthy amount of weight during pregnancy has benefits:
Here are two things you can do every day to gain a healthy amount of weight during pregnancy:
Enjoy being active.
Eat "twice as healthy" not "twice as much".
For more information on eating well and being active during pregnancy, visit: healthcanada.gc.ca/foodguide-pregnancy.