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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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.
Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
There are more nerve cells in one human brain than there are stars in the Milky Way.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.