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Did you know?
Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
The longest a person has survived after a heart transplant is 24 years.