Deborah the facts stated are known medical issues. That was not an ignorant statement. The women training for olympic sports often have their periods stop or missed for several months at a time but the cause is under debate. Some say its the extra strenuous activity that produces more testosterone in females (yes women have it too). Others say in some cases it could be females taking steroids. It was insinuated in the previous post that the reason the girls missed periods was due to malnutrition or abuse. This is misleading as it is common for women undergoing a change in their normal activities to have a change in their cycles or from the stress of being away from home in a different environment. You cannot include girls in boarding schools because in most cases the girls want to go to those schools and it is not as stressful as being sent to a therapeutic environment that they did not want to attend. It is also common for women going through a personal trauma such as a death in the family or divorce to miss periods. See the following cut and paste from WebMd website:
"Most women have between 11 and 13 menstrual periods each year. You may be different: You may have more or fewer. Missed or irregular periods must be looked at in terms of what is normal for you.
Missed or irregular periods have many causes. Pregnancy is usually the first cause to be considered, but other common causes are:
Lifestyle changes. Examples include:
Excessive weight loss or gain.
Increased exercise (missed periods are common in endurance athletes).
Extreme emotional stress.
Travel.
Medications, such as hormonal birth control methods, which may cause lighter, less frequent, more frequent, or skipped periods.
Eating disorders, such as anorexia or bulimia.
Menopause and the 2 to 5 years just prior to menopause (perimenopause).
The start of menstrual periods (menarche). For the first few years of menstruation, periods may be irregular.
Hormonal abnormalities , which cause fluctuating levels of the hormones needed to support menstruation.
Medications other than birth control pills, such as steroids, tranquilizers, diet pills, or recreational drugs.
Problems with the pelvic organs, such as imperforate hymen or polycystic ovary syndrome.
Breast-feeding.
Inflammatory bowel disease."