PRE PLANNING A PREGNANCY IN DIABETES IS ESSENTIAL unfortunately for couples trying for a baby, diabetes in one of the partners can lead to additional problems that increase the risk of infertility and pregnancy. Diabetes can cause erectile dysfunction, low testosterone levels, poor sperm quality, etc. In men while in woman, it cause decreased thyroid levels and ovarian function, thereby resulting in infertility in the long run. Diabetes in pregnant women can even lead to abnormalities in the child.