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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
The average office desk has 400 times more bacteria on it than a toilet.
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.
![For Gulf War veterans, lack of social support in the field is related to postwar depression. The ...](https://biology-forums.com/gallery/27/medium_660366_08_04_17_10_05_20_275621748.jpeg)
![Structural MRI can be used to provide three-dimensional images of the entire brain. (Courtesy of ...](https://biology-forums.com/gallery/30/medium_548020_05_06_17_10_54_02_30269589.png)