Addiction is not a disease.
If it can kill you then it’s a disease. Some people have beaten cancer, a disease, and lived.
Some die of suicide, a mental illness, that becomes a disease when they die from the illness.
The flu is an illness but it can kill you if you get advanced pneumonia which is then cause of death.
This entire discussion started with the premise that if you put something into your body then it’s not a disease (alcoholics) while cancer is a disease.
I disagree with that statement and used anorexia as an example. Things aren’t always black and white.