What are the dangers when girls/women lose their menstrual cycle from and eating disorder?

i tried researching this question over and over but then i get no answers and i really need to know why does that happen and is it dangerous??!?!?!

The reason you lose your period when you starve yourself is that you need a certain amount of body fat in order to menstruate--body fat produces estrogen, and without the body fat, there's not enough estrogen to have a monthly cycle. In and of itself, this is quite dangerous--if you don't have enough estrogen to menstruate, then you don't have enough estrogen to support your bones. Until women are about 30 or 35, their bones are supposed to be increasing in density and strength. Then after that time, they can either maintain, or lose density and strength. If you don't menstruate, then you are automatically losing strength and density of bone, meaning you WILL get osteoporosis at a young age--you can NEVER make up what you lost or failed to build--and that's DANGEROUS. Everyone worries about cancer getting them, but osteoporosis is more deadly. Breaking your hip can leave you bedridden for the rest of your life. It's been shown that there are a lot of risks to the brain due to low estrogen, but there have not been studies of those who were anorexic in their youth. But hypothetically, you might be at greater risk of Alzheimer's or Parkinson's disease. These are the dangers merely of not having your period. There is also, of course, major organ damage that can occur because of starvation.

It is all part of a bigger picture. Imbalance! I have seen eating disorders ruin lives and take lives. If your body doesn't have enough fat then your organs won't work and you can't get your period. I hope you are pursuing health through counseling and nutrition! Good luck and God Bless You!