The human body needs a variety of nutrients

Drugs like alcohol, nicotine, or heroin send dopamine into overdrive,leading some people to constantly seek that high,in other words, to be addicted.Sugar also causes dopamine to be released,though not as violently as drugs.And sugar is rare among dopamine-inducing foods.Broccoli, for example, has no effect,which probably explains why it's so hard to get kids to eat their veggies.Speaking of healthy foods,let's say you're hungry and decide to eat a balanced meal.You do, and dopamine levels spike in the reward system hot spots.But if you eat that same dish many days in a row,dopamine levels will spike less and less,eventually leveling out.