What is the definition or description of: diet supplements?

Diet supplements: Any medication or food that is meant to improve health status or cause weight loss, muscle gain, or fat loss. They may be used as meal replacements or add ons.

Food or nutrition: A dietary supplement, also known as food supplement or nutritional supplement, is a preparation intended to supplement the diet and provide nutrients, such as vitamins, minerals, fiber, fatty acids, or amino acids, that may be missing or may not be consumed in sufficient quantities in a person's diet. Some countries define dietary supplements as foods, while in others they are defined as drugs.