Publicity has many functions, such as losing weight, gaining weight and regulating the body. Some people even say that it can regulate the body's acid and alkali, promote sleep, etc., which is simply not credible.
Most of these things are food production licenses, some are candy, some are drinks, and some are jelly. Many licensed packages dare not indicate their efficacy, and those without licenses dare, because they can't find a company, which may be a small workshop. You can't trust the efficacy of all propaganda, so be careful.
Don't say that businessmen should have a conscience. Melamine milk powder is eaten directly by children, and there is never a conscience before interests.