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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
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Your heart beats over 36 million times a year.
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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
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Thyroid conditions may make getting pregnant impossible.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.