Many diets do not include the right balance of foods to keep you healthy.

Often, the special diets a doctor can order for a patient includes more than 80 variations.

The traditional Mediterranean diet included zero to four eggs a week.

Its diet may also have included some fruits and seeds.

The typical American diet includes more than 100 grams of total fat.

Its diet may have included plant material and small animals.

But the Italian diet, like most others, includes a wide variety of different foods.

It can also occur if a person's diet does not include enough of this vitamin.

However, over the course of a day, the average American diet includes almost double the protein needed to help maintain a healthy body.

Its diet is little known but includes squid and small fish.