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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.

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Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

European Rabbit in Shropshire, England, infected with myxomatosis, a disease caused by the Myxoma vi European Rabbit in Shropshire, England, infected with myxomatosis, a disease caused by the Myxoma vi
The reflection nebula NGC 1999 is brilliantly illuminated by V380 Orionis The reflection nebula NGC 1999 is brilliantly illuminated by V380 Orionis
Abnormalities Caused by Cardiac Pathology Abnormalities Caused by Cardiac Pathology
Abnormalities Caused by Cardiac Pathology Abnormalities Caused by Cardiac Pathology
A clogged PCV system caused the engine oil fumes to be drawn into the air cleaner assembly. This is ... A clogged PCV system caused the engine oil fumes to be drawn into the air cleaner assembly. This is ...
Muscle weakness caused by myasthenia gravis is evident in the eyes of this patient. Muscle weakness caused by myasthenia gravis is evident in the eyes of this patient.
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