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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
The average office desk has 400 times more bacteria on it than a toilet.
In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.