The debate over hi-tech gender selection like IVF and Microsort, is still unstoppable. But when it comes to health risks, sex does matter. Women are twice as likely as men to get multiple sclerosis, rheumatoid arthritis, and migraines. They’re also more likely to get cataracts, hepatitis, and thyroid disease. Women experience depression about twice as often as men. And irritable bowel syndrome (IBS) is thought to affect twice as many women as men. Although men have more heart attacks than women, more women die within a year after having a heart attack.
A sex-related illness is an illness that occurs more common to one sex. Sex-related illnesses have various causes (based on Wikipedia) :
Here are some common examples of sex-related illnesses in humans :