Paleo food lists contain what you should eat, should restrict, and what you should eat only in moderation. Obviously, what you should eat are the ones that are healthy for you and are the foods that will provide you with vitamins and nutrients. What you should eat in moderation are the foods that do not do the body any good, or too much of it is harmful to the health. What you should restrict are foods that are unhealthy, unnecessary, and can even cause diseases and illnesses.

In the Paleo diet dairy, grains, beans, potatoes and other starchy root vegetables are not allowed. Here's why, and here are the lists of foods that you should stay away from:

Dairy – dairy is one food group that people find hard to let go of in their diet. Some are even skeptical about restricting dairy because they think we need dairy in our diets. We need calcium, but the truth is we do not really need dairy. Dairy is not the only source of calcium; vegetables can also provide us with enough calcium for our bodily functions. Besides, the cave men did not even have dairy products and they did not have osteoporosis either.

Lactose, casein, carbohydrates and sugar are the reasons why dairy is not allowed in the Paleo diet. Our bodies do not need any more sugar and carbohydrates and we do not need lactose and casein in our diets. Many people are allergic to these substances and our bodies do not digest them well. Dairy products that you should stay away from are:

Cheese
Ice cream
Yogurt
Dairy creamer
Cream
Skim milk
Whole milk
Butter
Powdered milk

Grains, beans and potatoes – These three are big no-no's in the Paleo diet for several reasons. First, the Paleo diet is about imitating the diet of our ancestors in the Paleolithic era and these three foods were already developed in the Neolithic era during the development of agriculture. A second reason is that because these foods are mass produced, and unless they are organic, they contain chemicals that were sprayed onto them to protect them until harvest and to make them bigger. The soil that they were grown in also contains fertilizers.

The third and most important reason is that grains, beans, potatoes and other starchy vegetables are rich sources of carbohydrates. While we need carbohydrates in our diet, we do not need excessive amounts. The Paleo diet already has enough carbohydrates. Carbohydrates tend to increase the body's blood sugar levels and these three examples have a high glycemic index (meaning they increase the blood sugar levels upon digestion more than the usual). High consumptions of carbohydrates can cause diabetes and other diseases. Examples of grains, beans and starchy vegetables that you should avoid are:

Grains:
Corns
Oats
Rice
Wheat
Buckwheat
Rye

Beans / Legumes:
Chickpeas
Lentils
Peanuts
Peas
Soybeans
Peanut butter

Starchy vegetables:
Potato
Sweet potato
Cassava root
Tapioca pudding