Zero appetite after coming off Xanax? Why?

Twelve days ago I was hospitalized for xanax addiction and began detox while being monitored for seizures. Since the day I stopped taking xanax I have had NO appetite. I had nausea for the first few days due to withdrawal symptoms but withdrawals ended over a week ago and I got out of the hospital five days ago and sometimes I crave foods and try to eat them but I get so un-hungry right away. All I can manage is snacking on yogurt, crackers, and sunflower seeds. All I can drink is water and Gatorade so drinking the Ensure my mom bought is difficult. This is frustrating. I finally put on the amount of weight I wanted (I eat a lot and stay skinny) and now I've already lost two pounds. Help?
Zero appetite after coming off Xanax? Why?
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