Cocaine is a strong stimulant drug which suppresses appetite and the net result of that is people not eating properly.

CNN: Young models dying to be skinny

An anecdote about mephedrone, a synthetic derivative of a compound found in kat, a stimulant drug popular in parts of east Africa, illustrates the problem.

ECONOMIST: Plain speaking on a highly coloured issue

On Feb. 10, a panel of drug safety experts unexpectedly recommended that the U.S. Food and Drug Administration put a visible, boxed warning on stimulant medicines like Adderall, Ritalin and Concerta, which are used to treat the disorder in both children and adults.

FORBES: Pay Attention

Lilly has another promising brain drug nearing the end of its development as well: Strattera, a non-stimulant treatment for attention-deficit disorder.

FORBES: Eli Lilly Goes Back To The Brain