Eating disorder recovery can be compared to a pendulum-swing effect. It can feel like the eating disorder pulls you to one extreme and as you let the eating disorder go, you go through centre to the other extreme in all kinds of ways, such as high hunger, eating more, feeling exhausted, weight gain and body changes which can all be alarming. 
My books:
Addicted to Energy Deficit
Aiming for Overshoot
 
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