Idk why i keep worry about colon cancer at 22 but my only symptom is intermittent lack of appetite is intermittent lack of appetite a symptom of cc?

Not generally: Colon cancer is not unheard of in 22 year olds, but is extremely rare, unless there is a strong family history (genetic predisposition, various syndromes). See your doc, get examined, mention your fears; get reassured. If there are significant abnormalities that deserve further ealuation, then they can be addressed as well.

I am more: Concerned about why you are so worried and would consider whether you need be treated for a behavioral health disorder.