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A healthy weight before and during pregnancy, for women with type 1 diabetes

Try to aim for a healthy weight before becoming pregnant. A healthy eating plan and staying active can help with weight management.

The weight gain recommended for pregnancy depends on your weight before you conceive. It is a good idea to have a review with a dietitian for guidance on pregnancy-specific nutrition needs and your personal weight gain target. There is some weight gain associated with a healthy pregnancy and it is generally not advisable to try and lose weight while you are pregnant. However, you also need to take care not to ‘eat for two’.

The table below shows the recommended weight gain targets for pregnancy depending on your pre-pregnancy weight range (calculated using Body Mass Index or BMI = weight (kg) / height (m) x height (m)).

Your weight should be checked regularly throughout your pregnancy.

Recommended weight gain targets for pregnancy
Pre-pregnancy BMIWeight rangeRecommended pregnancy weight gain
<18.5underweight12.5–18kg
18.5–24.9healthy weight11.5–16kg
25–29.9overweight7–11.5kg
>30obese5–9kg