Balanced diet

a diet consisting of the proper quantities and proportions of foods needed to maintain health or growth.
Contemporary Examples

The short answer is “a balanced diet,” which means foods that are high in protein and low in carbohydrates and fat.
5 Metabolism Myths Debunked Sarah Whitman-Salkin August 24, 2009

Historical Examples

Running ten miles a day and eating a balanced diet of organic fruit and nuts?
Makers Cory Doctorow

So he must know something of dietetics and he must have a balanced diet.
Diet and Health Lulu Hunt Peters

“Vegetables,” said Marcus, watching to make sure his son selected a balanced diet.
Mezzerow Loves Company Floyd L. Wallace

So far as the food quality of the chestnut is concerned it is not a balanced diet, mostly sugar, but it is a splendid food.
Northern Nut Growers Report of the Proceedings at the Twenty-First Annual Meeting Northern Nut Growers Association

“Uh-huh,” grunted Sarah, interested at that moment in a description of a balanced diet for her pets.
Rosemary Josephine Lawrence

Black bread, potatoes, and sometimes cabbage, make up his “balanced diet.”
Lest We Forget John Gilbert Thompson

balanced diet n.
A diet that furnishes in proper proportions all of the nutrients necessary for adequate nutrition.

A diet that contains the proper proportions of carbohydrates, fats, proteins, vitamins, minerals, and water necessary to maintain good health.