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The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

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One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

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The average adult has about 21 square feet of skin.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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