My husband has crohns now for 11 yrs. Got bronchitis a mth ago, ever since he has NO appetite.?

This is really abnormal for him. Hes a big guy, and a big eater usually. He started around 260-270, now hes 236. They did ct scan and x- rays the day he got diagnosed with bronchitis, June 10th. Said he had bronchitis and small flare up. Now he can go all day with nothing. He says otherwise no more chest pain or bronchitis symptoms, ya know. We been married 9 yrs, never seen him not hungry, im very concerned.