What are the largest groups of foods eaten by people?

It's impossible to say definitively what the "largest" groups of foods are eaten by people because that depends on what criteria you use. Here are a few different ways to think about it:

By Calories:

* Grains: These are a major source of calories worldwide, including rice, wheat, and corn. They are often the basis of many diets, especially in developing countries.

* Starchy Roots: Potatoes, yams, and cassava provide significant calories, especially in regions where grain production is challenging.

By Weight:

* Vegetables: This category is incredibly diverse and includes a vast array of plants consumed worldwide. While individual vegetables might not be eaten in huge quantities, collectively they make up a large portion of the human diet.

* Fruits: Similar to vegetables, fruits offer a wide variety of options, and their consumption contributes significantly to dietary weight.

By Dietary Importance:

* Protein: While specific sources vary by region, protein is essential for human health. This includes meat, fish, poultry, eggs, dairy, beans, and nuts.

* Carbohydrates: As mentioned above, grains and starchy roots are major sources of carbohydrates, but fruits and vegetables also contribute.

By Cultural Significance:

* Regional Specialties: Many cultures have specific foods that are central to their diets. For example, rice in Asian countries, pasta in Italy, and tortillas in Mexico.

It's important to remember:

* Dietary diversity: People around the world eat a vast range of foods, and there is no single "largest" group.

* Cultural and geographical factors: What people eat is influenced by their location, culture, and access to resources.

Ultimately, it's the combination of all these factors that shapes the dietary patterns of different populations.