Does Excess Weight Cause Infertility?

Gynecology, Obstetrics and IVF Specialist Op. Dr. Seval Taşdemir stated that the problem of overweight (obesity) may have negative effects on fertility and may even lead to infertility.

The number of overweight people is increasing both in the world and in our country. In our country, 21% of men and 42% of women are considered overweight. Excess weight causes infertility problems as well as other health problems. Menstrual irregularity and ovulation problems seen in overweight women significantly reduce the chance of getting pregnant and lead to infertility in the future. Just like being overweight, being underweight is among the factors that reduce the chance of pregnancy. In women, 66% of the estrogen hormone is produced in fat cells. An increase or decrease in estrogen levels negatively affects pregnancy. The ideal weight of both couples significantly increases the probability of conception.

The effect of overweight in women

A large number of fat cells disrupt the estrogen balance in women. High estrogen level is considered as one of the factors that prevent ovulation. The metabolic disorder caused by the high body mass index has a significant effect on the development of the egg. Women with ovulation disorders have a very low chance of natural pregnancy. The ideal body mass index for conception is between 21 and 29. A lower or higher body mass index directly affects the chance of conception. According to studies, it has been observed that 60% of overweight women who lost 5% of their weight have had their menstrual irregularity problem disappeared and their menstruation has returned to regularity.

The effect of overweight in men

Excess weight is extremely important not only for women, but also for men. Overweight men have significantly reduced sperm quality. Estrogen hormone is produced in adipose tissue in men as well as in women. However, this production is much less than women. The ratio of testosterone to estrogen increases even more in men with more adipose tissue. Men who are overweight are more likely to have hormonal disorders than men of ideal weight. Sperm quality also decreases in direct proportion to the decrease in testosterone ratio. Reducing the ideal weight in men ensures that the quality of sperm increases again. Being less than normal in body weight and sudden weight loss reduces sperm count and sperm motility. Therefore, the ideal is not to lose excess weight all at once, but to lose weight by eating regularly under the supervision of a doctor.


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