What are the main six food groups?

There isn't a strict set of "six food groups" that's universally accepted. However, the most common way to categorize food is by using the five food groups, which are:

1. Fruits: Apples, bananas, oranges, berries, etc.

2. Vegetables: Broccoli, carrots, spinach, lettuce, etc.

3. Grains: Bread, rice, pasta, cereal, etc.

4. Protein Foods: Meat, poultry, fish, beans, eggs, nuts, seeds, etc.

5. Dairy: Milk, yogurt, cheese, etc.

Sometimes, oils are included as a separate group, but they're often considered part of the protein foods group since they're often used in cooking and salad dressings.

The importance of these food groups is that they provide different nutrients that are essential for our bodies to function properly.