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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
People about to have surgery must tell their health care providers about all supplements they take.
There are approximately 3 million unintended pregnancies in the United States each year.
Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.