Anyone get that feeling of pure euphoria/ecstasy after eating following a period of malnourishment? What is that??

I recently went for a period of about 1.5 months in which I was eating very little due to some psych trauma work I was doing and a lifelong history of ARFID. I eventually started to get symptoms of malnourment and decided to get it under control. On the first day, I had a smoothie, a multivitamin, and an iron supplement....