Infertility - Effect of BMI

BMI

• Women who have a BMI ≥30 should be informed that they are likely to take longer to conceive. 
•  Women who have a BMI ≥30 and who are not ovulating should be informed that losing weight is likely to increase their chance of conception. 

Participating in a group programme involving exercise and dietary advice leads to more pregnancies than weight loss advice alone.

• In women, weight loss of > 15% of ideal body weight is associated with menstrual dysfunction with secondary amenorrhoea when > 30% of body fat is lost.
• Restoration of body weight may help to resume ovulation and restore fertility.
• Men who have a BMI ≥30 should be informed that they are likely to have reduced fertility