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Did you know?
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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There are more nerve cells in one human brain than there are stars in the Milky Way.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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There are more bacteria in your mouth than there are people in the world.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.