Eat mainly foods that are categorized as green-light foods.

According to science, a whole food, plant-based diet is the healthiest one.

1. Eat mostly green-light foods.
   Avoid processed plant foods.

2. Minimize orange-light foods.
   These are processed plant foods and unprocessed animal foods.

3. Avoid red-light foods.
   These are ultra-processed plant foods and processed animal foods.