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People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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.
Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.
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.
![Space-filling model of an actin filament (shades of red) with one myosin head (gray and two shades o](https://biology-forums.com/gallery/47/medium_9828_12_01_13_11_13_18.jpeg)
![A medical records department. (Paper records are becoming obsolete, replaced by electronic records.)](https://biology-forums.com/gallery/47/medium_380792_19_05_16_2_39_01_235261537.jpeg)