In general, ADHD children need homes and schools that are unusually well structured with clear rules and immediate consequences. Various programs try to maximize the chances that the ADHD child will experience an environment in which such supervision and monitoring are high. Usually any eating problems are managed through changes in dose times and availability of food during the day. Generally, though, the stimulants tend to be very safe medications as best the scientific literature can tell. But generally the two are unconnected.
All disorders are the product of both nature and nurture.
Clearly, the nature of the environment will effect the extent to which ADHD traits will become manifest. However, for children who have serious problems with impulse control and attention, even the best of environments will not prevent impairment. The first signs are highly impulsive, overactive behavior in most situations and relatively consistently from day to day. There are no new methods for managing the anger of ADHD children, although some of the tried and true methods can work fine with effort. According to various studies, ADHD rivals hair color for its genetic inheritability.