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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
There are 20 feet of blood vessels in each square inch of human skin.