Primary amenorrhea is often seen in girls who begin training at a very early age, most commonly in dancers, figure skaters and gymnasts. Girls who have reached the age of 16 without the onset of menses are considered to have primary amenorrhea. Some girls who participate in sports and train hard may never get their first period without the help of a doctor. Secondary amenorrhea is when a young women starts menstruating and do to excessive exercise and loss of estrogen her period becomes irregular or stop totally.
             The third triad factor is osteoporosis, the
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