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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.
Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.
Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%