How Being Overweight or Underweight Causes Infertility in Women
How Weight Affects the Menstrual Cycle and Ovulation
Women who are underweight or overweight may experience infertility due to dysfunctional or absent ovulation (ovulation disorders), which is the release of a mature egg from the ovaries during the regular menstrual cycle. According to the ASRM, 12 percent of all primary infertility cases are a result of the woman either weighing too little or too much.
The body weight of women affects fertility because of the disruption of typical cyclic hormonal patterns. Because of this and other complex hormone interactions, extra or too little weight impairs the menstrual cycle and ovulation.