healthy diet isa diet that maintains or improves overall health. A healthy diet provides the body with essential nutrition: fluid, macronutrients such
as proteinmicronutrients such as vitamins, and adequate fiber and food energy.

A healthy diet may contain fruits, vegetables, and whole grains,
and may include little to no processed food or sweetened beverages.
The requirements for a healthy diet can be met from a variety of plant-based and animal-based foods, although additional sources of vitamin B12 are needed for those following a vegan diet. Various nutrition
guides
 are published by medical and governmental institutions
to educate individuals on what they should be eating to be healthy. Nutrition facts labels are also mandatory in some countries to allow consumers to choose between foods based on the components relevant to health.