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Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
The average office desk has 400 times more bacteria on it than a toilet.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
The human body produces and destroys 15 million blood cells every second.