Breast Cancer (Symptoms & Causes)

Overview Breast cancer is cancer that forms in the cells of the breasts. After skin cancer, breast cancer is the most common cancer diagnosed in women. Breast cancer can occur in both men and women, but it's far more common in women. Substantial support for breast cancer awareness and research funding has helped created advances in the...

Rabies (Diagnoses & Treatment)

Diagnosis At the time a rabid animal bites you, there's no way to know whether the animal has transmitted the rabies virus to you. For this reason, treatment to prevent the rabies virus from infecting your body is recommended if the doctor thinks there's a chance you have been exposed to the virus. Treatment Once a rabies...

Heart Attack (Symptoms, Causes, & Prevention)

Overview A heart attack occurs when the flow of blood to the heart is blocked. The blockage is most often a buildup of fat, cholesterol and other substances, which form a plaque in the arteries that feed the heart (coronary arteries). The plaque eventually breaks away and forms a clot. The interrupted blood flow can damage...

Rabies (Symptoms, Causes, & Prevention)

Overview Rabies is a deadly virus spread to people from the saliva of infected animals. The rabies virus is usually transmitted through a bite. Animals most likely to transmit rabies include bats, coyotes, foxes, raccoons and skunks. In developing countries of Africa and Southeast Asia, stray dogs are the most likely to spread rabies to people. Once...

Is Sleeping with the Lights On Good or Bad?

As a child, you might remember hearing “lights out” as a way to tell you it was time to go to bed. Having the lights off at bedtime is much more than a common bedtime phrase, though. In fact, the decision to turn out the lights, or leave them on, could affect your health. Yet...