|
|
People about to have surgery must tell their health care providers about all supplements they take.
Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.