Any affection which accompanies disease; a perceptible change in the body or its functions, which indicates disease, or the kind or phases of disease; as, the causes of disease often lie beyond our sight, but we learn their nature by the symptoms exhibited.
A sign or token; that which indicates the existence of something else; as, corruption in elections is a symptom of the decay of public virtue.
This is what people don't understand: obesity is a symptom of poverty. It's not a lifestyle choice where people are just eating and not exercising. It's because kids - and this is the problem with school lunch right now - are getting sugar, fat, empty calories - lots of calories - but no nutrition. Tom Colicchio