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Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
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.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.

