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2001 JUN 21 - (NewsRx Network) -- Young women who exercise to the point they develop amenorrhea (no longer have menstrual periods) run the risk of developing osteoporosis and cardiovascular problems, according to a study done by Anne Zeni Hoch, DO, assistant professor of physical medicine and rehabilitation, and orthopedic surgery at the Medical College of Wisconsin.
Hoch presented her findings at a meeting of the American College of Sports Medicine in Baltimore, Maryland, on June 2, 2001. She examined 10 women athletes, with an average age of 21 years, who ran a minimum of 25 miles per week. The women had not been menstruating for average of two-and-a-half years.
The cause of athletically-induced amenorrhea is multi-factorial. Diet, amount of exercise, stress, and genetics all play a role. However, recent research is pointing toward diet as a strong risk factor. Women who exercise for one hour or more per day should consume approximately 45 calories per one kg (2.2 Ibs) of body weight. For example, a 60 kg (132 lb.) woman should consume 27 calories per day consisting of 60% carbohydrates, 15% protein and 25% fats. Especially important for women is adequate calcium intake to help prevent osteoporosis and build strong bones. For women ages 11-24 years, the daily recommendation is 1500 mg of calcium or four to five eight-ounce glasses of milk per day.
In the face of an inadequate diet and other stressors, Hoch explains, a young woman's reproductive system tends to "shut down." This is manifested by the cessation of menstrual periods. Without menstrual periods, estrogen levels, which are necessary for bones to absorb calcium, are reduced. Not only do the bones fail to absorb calcium, but the body removes calcium from the bones for other functions, thus weakening the body's skeleton.
"The situation can be permanent," says Hoch. She asserts there are high school girls in the Milwaukee, Wisconsin area with osteoporosis, a disease typically found in ...
Source: HighBeam Research, Poor Diet, Excess Exercise Can Mean Weak Bones And Heart Troubles For...