A condom is a sheath that forms a barrier between the penis and the vagina. Condoms can be used alone or with other forms of birth control to provide protection against pregnancy.

CTA is an imaging test that makes detailed pictures of your blood vessels.

High blood pressure is known as the "silent killer" because it often has no symptoms. Healthy changes can help you lower your blood pressure. 

Learn about how a new lens is implanted after cataract surgery.

In hot environments, your body may have trouble keeping its temperature at a safe level. As a result, your body temperature rises to unsafe levels. This is heat stress. Heat stress can develop quickly. It can also be very dangerous to your health.

How much do you know about protecting your hearing? Take the quiz to find out.

Learn about how earplugs and earmuffs can protect you from hearing damage.

An audiometric test measures how well you hear. It's quick and painless. The Occupational Safety and Health Administration (OSHA) and your employer may require this test each year. Follow through with it. You can't "fail" a hearing test. The test results just help your employer know whether more hearing protection is required.

At the workplace, your employer measures noise with sound level meters and dosimeters. If the average noise exposure over an 8-hour work shift is 85 dB or higher, you need protection. OSHA requires your employer to have a hearing conservation program.

As you age, some hearing loss is normal. You lose more than the ability to hear how loud a sound is. You also lose the ability to hear certain types of sounds. For example, you might not be able to hear some of the high-pitched sounds of a child's voice.