 [ Symptoms ] seconday amenorrhea with normal hormone panel i am a female athlete with low body fat when i hit a certain weight i always experience secondary amenorrhea as i have been below this weight for a significant amount of time i have not had a period in 1 5 years i did a full hormone panel and all tests were normal how can all my hormone levels be normal yet i am not menstrating i have spoken with two doctors and they cannot explain this to me additionally i have no other symptoms i e acne increased hair growth etc [ Disease ] hi when i had mine done the doc said swimming was the best thing for it low impact what else could you ask for you in cool water as well and that is good for the knee great way to exercise and your knee does well for it do hope this helps good luck