Good for you! This is how it all starts. By adding foods back slowly you may start to find what foods are a trigger for gut inflammation and depression.
There is one medical diet, called the FODMAP diet you might want to look into. It helps you find what foods might be causing some bacterial in your gut to become imbalanced.
I am not at all saying it is all you microbiome, foods may affect us in so many more way than only in the gut. It may be that not eating has lowered oxidative stress in your body allowing your mitochondria to recover and are now able to provide the energy you need.
There is one medical diet, called the FODMAP diet you might want to look into. It helps you find what foods might be causing some bacterial in your gut to become imbalanced.
I am not at all saying it is all you microbiome, foods may affect us in so many more way than only in the gut. It may be that not eating has lowered oxidative stress in your body allowing your mitochondria to recover and are now able to provide the energy you need.