Basically, there are three types of any equilibrium: (a) Stable Equilibrium: There is stable equilibrium, when the object concerned, after having been disturbed, tends to resume its original position. Thus, in the case of a stable equilibrium, there is a tendency for the object to revert to the old position.
The modern disease theory of alcoholism states that problem drinking is sometimes caused by a disease of the brain, characterized by altered brain structure and function. The American Medical Association (AMA) declared that alcoholism was an illness in 1956.
alcoholism: a disease In 1956 the American Medical Association decided that alcoholism is a disease, however more than 30 years later this is still debated in certain circles. Besides the medical opinion, there are many others (e.g., legal, sociological, religious) which derive from any number of social pressures.