Regulation of Intake

The regulation of food and nutrients means decreasing or increasing the amount of nutrients or calories within the diet. Most of the responses to foods within a diet come from people's innate belief that there are 'good' and 'bad' foods. It is from that belief that people most often develop bad diets, because they believe that eating foods which they consider healthy in abundance will create a healthy diet. However, this could not be further from the truth.

From this response, an individual must learn that there are no bad foods, and learn to follow the guidelines their state sets for a healthy diet. These usually range slightly from country to country based on demographics, but usually the same guidelines of eating less fried or fatty foods to reduce cholesterol, and even replacing certain foods with healthier alternative, "healthy" indicating foods which contain both the same or more energy as the original food, but have an abundance of nutrients, for instance: foods such as legumes or beans, within a salad or pasta.

The ingredient usually cited as being most crucial to good health, water, has even been known to result in death when consumed in extraordinary quantities. Deaths from excessive water drinking have generally occurred in persons who are or who have recently been under the influence of hard drugs; for example, MDMA (ecstasy); and in non-elite athletes, according to a 2005 paper in the New England Journal of Medicine over-hydration resulting in "Hyponatremia has emerged as an important cause of race-related death and life-threatening illness among marathon runners".