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Author Question: Some dark matter may be ordinary matter that orbits in the halo of the galaxy. Which of the ... (Read 37 times) |
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The human body produces and destroys 15 million blood cells every second.
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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.