For some the damage they do to their metabolism during their ED can be permanent, but it all depends on how long you have been sick and what type of damage has been done, as well as HOW you recover. Those who recover only eating safe foods and only eating c.a 1200 calories, then their metabolism will still be slow and wont have repaired properly when they are a healthy weight and recovered. HENCE why i reccommend to eat a LARGE amount during recovery. Its not just some number that has been picked out, but eating a larger amount and keep increasing your calories helps YOU and your body... helps your body to repair and function properly for when you are healthy.
What Is Metabolism?
Metabolism while recovering....
When you starve yourself and dont eat enough. Then your body almost goes into shut down. Your metabolism decreases significantly because it knows that it is underweight and that it cant keep burning so much energy everyday, or you will just collapse. It goes into starvation mode, where it tries to preserve the organs and any fat which you may have. So whatever you do eat while you're body is in starvation mode, doesnt really get burned for energy... the body just tried to store it. You can be very bloated and tired when your body is in starvation mode and the body doesnt want to let go of any energy at all... So when you begin recovery - begin eating again, its a shock for the body. It doesnt know why all this food is coming and doesnt know what to do with it, as its gone without food for so long. So you bloat alot and can go up a few kilo in just a week, as it is mainly water and water retention. But over time as your body gets used to get food your metabolism increases and thats why you need to increase your calories to gain weight, because your body adapts to the amount you are eating and no longer gains weight from it. And that continues... where you need to keep increasing your calories, because your metabolism is getting faster.