The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
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Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
An adaptation protecting against aluminum toxicity.