Weight and Fertility

PATIENT’S FACT SHEET: Weight and Fertility

Being overweight or obese may reduce a woman’s fertility. When pregnancy is achieved, excessive weight increases risks associated with pregnancy. Weight loss may improve fertility and pregnancy outcome.

A body mass index (BMI) of 25 to 29.9 is considered overweight, and obesity is defined as a BMI of 30 and above.

BMI chart

Fertility issues with obesity

Irregular or infrequent menstrual cycles.
Increased risk of infertility.
Increased risk during fertility surgery.
Increased risk of miscarriage.
Decreased success with fertility treatments.

Potential pregnancy complications with obesity

Increased risk of high blood pressure.
Increased risk of diabetes in pregnancy.
Increased risk of birth defects.
Increased risk of high birth-weight infant.
Increased risk of Cesarean section.

Benefits of weight loss

Weight loss of 5% to 10% may dramatically improve ovulation and pregnancy rates.
Improved health including reduced diabetes, high blood pressure, and heart disease.
Improved self-esteem.

Weight loss involves a serious commitment involving a healthy diet and exercise. Help is available from your health care professional.

The American Society for Reproductive Medicine grants permission to photocopy this fact sheet and distribute it to patients. Revised 8/2001

AMERICAN SOCIETY FOR REPRODUCTIVE MEDICINE

1209 Montgomery Highway • Birmingham, Alabama 35216-2809 • TEL (205) 978-5000 • FAX (205) 978-5005 • E-MAIL asrm@asrm.org • URL http://www.asrm.org