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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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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.
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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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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.