Alcoholism, drug addiction. I think that these factors have a very negative effect on economic growth. This problem is especially acute in countries where the percentage of people suffering from alcoholism is quite high. Economics suffers from the fact that a person does not go to work, makes a defective goods at work, a family suffers, children can be born with diseases and the state will allocate money for their treatment. The situation with drug addiction is even worse than with alcoholism.