How much weight to gain during pregnancy by trimester?

Whilst it’s normal to gain some weight during pregnancy, gaining too much weight during pregnancy can impact you and your baby’s health. For example, it can increase your risk of developing gestational diabetes (diabetes during pregnancy) and your baby’s risk of becoming overweight or obese later in life. It is important to only gain the recommended weight gain based on your pre-pregnancy BMI.

If you are a healthy weight pre-pregnancy you should expect to gain 11.5 – 16 kgs.  In the first three months it is normal to gain 1 – 1.5 kgs, then 1.5 – 2 kgs each month after that. If you are under or overweight this will change.  If you are underweight you should gain more like 12.5 – 18kgs and if you are overweight between 7 – 11 kgs.

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