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Author Question: The time of birth is determined by the fetus, which releases hormones into the mother's blood system ... (Read 40 times) |
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.