- food and drink considered in terms of its qualities, composition, and its effects on health, and
- a particular selection of food, especially as designed or prescribed to improve a person’s physical condition or to prevent or treat a disease.
It’s only later that diet is defined as a method to lose weight. Your diet is important. For certain diseases, a specific diet is required or recommended. We’ll give you a few examples. If you suffer from renal failure and you aren’t receiving regular dialysis, you need to watch your potassium intake.
A low salt diet is important for those with congestive heart failure. Concentrated sugar is enemy number-one for diabetic patients. In fact, a good diet can help some diabetics control their disease without insulin or other medication.
Some types of liver and kidney dysfunction require a diet rich in the right types of protein. Other diseases are also dramatically impacted by what you do and don’t consume. If you have a certain type of the rare disease porphyria, for example, you’ll not only be intolerant of alcohol, but you’ll also need to eat regularly to avoid even mild hunger.