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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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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

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There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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There are approximately 3 million unintended pregnancies in the United States each year.

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