It is clear that obesity can have many repercussions on health. But, did you know that for example it can affect fertility in men and women? We see how he does it in the following lines.

Obesity is the direct trigger of many disorders that can interfere in a very negative way to achieve a pregnancy, either naturally or with assisted reproductive techniques. In fact, some studies have even pointed out that 12% of cases of primary infertility are due to overweight problems.

In the case of women, obesity causes key hormonal alterations for the proper functioning of the ovaries. An obese woman (BMI greater than 30) who wants to undergo an assisted reproductive procedure should lose weight to levels considered healthy. In men, a BMI greater than 30 means that there are fewer sperm and they have less mobility.


One of the main obesity-related disorders in women is polycystic ovary syndrome (PCOS) , a cause of anovulation and, therefore, sterility. For an accurate diagnosis, at least two of the following symptoms must be present:

  • Irregular menstruation
  • Enlarged and larger ovaries with multiple small follicles
  • Excess androgen hormones
  • Hypothyroidism
  • Luteal phase defects
  • Estrogen excess

According to various studies, an obese woman who wants to undergo assisted reproduction treatment has to reduce her BMI. The success of ovarian stimulation to obtain oocytes is directly related to weight. For this reason, in women with obesity, the dose of hormones to be administered increases significantly and, as a consequence, the possible adverse effects.


At Bariatrics by Rajat in Vadodara we remind you that excess body weight can lead to a reduction in sperm count or decrease sperm activity. In cases of overweight and obesity, the sperm count and concentration can be reduced by up to 21.6%. In cases of morbid obesity, the percentage rises to 23.9%.


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