Infertility & Obesity Facts
Why do people experiencing infertility need to consider their weight?
Consider the facts:
- Obese women have reduced reproductive hormones
- Weight loss increases production of reproductive hormones
- 5-10 percent weight loss by obese women increases ovulation and pregnancy rates
- Obesity reduces a man’s sperm quality and quantity
- Obese couples have a further decrease in fertility
- Obese women take almost 20 percent more time achieving pregnancy than women in an optimal weight range
- A 25-year-old woman with a normal body mass index (BMI) has up to 70 percent clinical pregnancy rate with IVF, while a 25-year-old woman with a BMI of 40 has a 30 percent clinical pregnancy rate.
- Obese women who undergo donor sperm insemination take longer to conceive
- In the US, 31 percent of the population older than 15 has a BMI greater than 30—considerably more than any other country (see the chart below).