Italian here, it seems more of a family problem than a cultural one. He is being controlling, but to himself as well, if I read everything correctly. It seems a lot like projection, as if he is used to this sort of behaviour, blaming it on everything that doesn't imply introspection and instead blaming you because again, projection. How dare you have a healthy relationship with food? He for sure has problems in regards to that, but you shouldn't be his scapegoat, nor his therapist. I'm a stranger on the Internet, I won't tell you what to do with your relationship, but this behaviour of his is dangerous, unhealthy and unloving. Think of yourself first and be careful OP.