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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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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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There are 60,000 miles of blood vessels in every adult human.

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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

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