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What is tooth decay? Tooth decay is damage to a tooth's surface, or enamel. It happens when bacteria in your mouth make acids that attack the enamel. ...
What are teeth? Your teeth are made of a hard, bonelike material. There are four parts: Enamel, your tooth's hard surface Dentin, the hard yellow part ...
Tornadoes are nature's most violent storms. They are rotating, funnel-shaped clouds that extend from a thunderstorm to the ground. Their whirling winds can reach ...
A transient ischemic attack (TIA) is a stroke that lasts only a few minutes. It happens when the blood supply to part of the brain is briefly blocked. Symptoms ...
What is traumatic brain injury (TBI)? Traumatic brain injury (TBI) is a sudden injury that causes damage to the brain. It may happen when there is a blow, ...
What is a tremor? A tremor is a neurological condition that includes shaking or trembling movements in one or more parts of your body. It most often affects ...
What is tuberculosis (TB)? Tuberculosis (TB) is a bacterial disease that usually attacks the lungs. But it can also attack other parts of the body, including ...
What is Turner syndrome? Turner syndrome is a genetic disorder that affects a girl's development and appearance. It can also cause health problems such ...
Almost every day, new findings from medical research are published in scientific journals. These journal articles often become sources for news stories. They ...
What is urinary incontinence (UI)? Urinary incontinence (UI) is the loss of bladder control, or being unable to control urination. It is a common condition. ...
The urinary system is the body's drainage system for removing wastes and extra water. It includes two kidneys, two ureters, a bladder, and a urethra. Urinary ...
What are uterine fibroids? Uterine fibroids are the most common noncancerous (benign) tumors in women of childbearing age. You may have uterine fibroids ...
What are vaccines? Vaccines play an important role in keeping us healthy. They protect us from serious and sometimes deadly diseases. Vaccines are injections ( ...
What are vaccines? Vaccines are injections (shots), liquids, pills, or nasal sprays that you take to teach your body's immune system to recognize and defend ...
What is vaginitis? Vaginitis, also called vulvovaginitis, is an inflammation or infection of the vagina. It can also affect the vulva, which is the external ...
What are vascular diseases? Your vascular system is your body's network of blood vessels. It includes your: Arteries, which carry oxygen-rich blood from ...
A vasectomy is a type of minor surgery that prevents a man from being able to get a woman pregnant. It is a permanent form of birth control. A vasectomy ...
What is vision impairment? Vision impairment is the loss of vision. It includes blindness, which means that you have lost all or most of your sight. It ...
Your vital signs show how well your body is functioning. They are usually measured at doctor's offices, often as part of a health checkup, or during an emergency ...
What is vitamin D deficiency? Vitamin D deficiency means that your body is not getting enough vitamin D to stay healthy.Why do I need vitamin D and how ...
