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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.