A couple is said to be infertile if pregnancy does not result after 1 year of normal sexual activity without contraceptives. About 25 percent of couples experience infertility at some point in their lives.

The incidence of infertility increases with age. The male partner contributes to about 40 percent of cases of infertility.

Male infertility is a reasonably common problem. Being infertile has nothing to do with male sexual prowess (virility), but rather with the absence of healthy sperm in the semen that are capable of traveling to meet the ovum.

Erectile dysfunction (ED) is when a man has trouble getting or keeping an erection. ED becomes more common as you get older. But male sexual dysfunction is not a natural part of aging.

Some people have trouble speaking with their doctors about sex. But if you have ED, you should tell your doctor. ED can be a sign of health problems. It may mean your blood vessels are clogged. It may mean you have nerve damage from diabetes. If you don’t see your doctor, these problems will go untreated.

Your doctor can offer several new treatments for ED. For many men, the answer is as simple as taking a pill. Getting more exercise, losing weight or stopping smoking may also help.

A urinary tract infection is an infection that begins in your urinary system. Your urinary system is composed of the kidneys, ureters, bladder and urethra. Any part of your urinary system can become infected, but most infections involve the lower urinary tract — the bladder and the urethra.

Women are at greater risk of developing a urinary tract infection than are men. A urinary tract infection limited to your bladder can be painful and annoying. However, serious consequences can occur if a urinary tract infection spreads to your kidneys.

Antibiotics are the typical treatment for a urinary tract infection. But you can take steps to reduce your chance of getting a urinary tract infection in the first place.