Commonly Asked Questions with Dr. Loren Cordain

Commonly Asked Questions | The Paleo Diet

Commonly Asked Questions

1. What is the most potential danger following The Paleo Diet?

There are no known adverse health effects of the diet in most people.  Pregnant women should not exceed 25% of their calories from protein, as the liver is less able to detoxify protein during pregnancy.

2. There is no Vitamin D consumed in the Paleolithic Diet. In your article, “The Nutritional Characteristics of a Contemporary Diet Based Upon Paleolithic Food Groups,” you write that sunlight is the only way our ancestors got Vitamin D. Today, with all the new research, how do you suggest we get our Vitamin D?

I suggest taking between 2,000 to 4,000 IU of vitamin daily if you cannot obtain regular sun exposure.

3. Since there is no calorie counting in the Paleolithic Diet, how can a person lose weight?

Refined sugars, refined grains, refined vegetable oils and dairy comprise 70% of the calories in the US diet.  By reducing these foods and replacing with fresh fruits, vegetables, grass produced meats, fish and seafood, we can make our diets more nutritionally dense and increase the satiety value of our foods — both of which will help to promote weight loss, along with elimination of processed foods.

4. If there really is “no limit” on how much to eat, how do you approach a healthy balance of the allowed foods?

Real foods such as grass produced or free ranging meats, fish, seafood and fruits and vegetables are self-limiting.  Your body gives your brain signals to stop eating with these foods when you are full,  whereas it is quite easy to overeat nutrient depleted processed foods made from refined sugars, grains and vegetable oils, etc.
5. If a person has never shown a hypersensitivity to milk, legumes or grains will they feel the benefits of The Paleo Diet?

Yes.  These foods contain a variety of antinutrients and nutritional qualities which may adversely affect health in a manner that is not always obvious to the consumer.

6. What is your opinion on the use supplements for vitamins and minerals?

Except for vitamin D and fish oil (if you don’t regularly eat fatty fish), most antioxidant vitamins and minerals actually increase mortality from all causes.  See my most recent book, The Paleo Answer, for further information.

7. Do you think there are enough resources for our entire country and world to sustain a strictly Paleo Diet?

No.  But in the US and other countries, we are not suffering from diseases of under-consumption, but rather from diseases of over consumption.  Hence, most middle class US citizens can afford to eat high quality foods such as fresh fruits, vegetables, grass produced meats and poultry, fish and seafood.

8. In your opinion, what is the main reason people choose not to go Paleo?

They are either unaware of the concept, or shy away from it because they have pre-conceived notions that it is “too restrictive.”  In fact, these are the same people who consume 70% of their calories from only 4 foods (refined sugars, refined grains, refined vegetable oils and dairy).  When prospective Paleo dieters remove these 4 foods, they will suddenly find themselves eating a more varied and nutrient rich diet than they ever, as fresh fruits, vegetables, grass produced meats, and seafood become their staples.

9. The Paleo Diet cuts out a lot of foods from the average human diet.  What do you think is the most important food for us to cut out of our diets? Sugar, dairy products, grains, legumes, unhealthy fats/oils, etc.? Or, is this question impossible answer since each of these foods affects our health differently?

As I pointed out in the previous question, these same 4 foods comprise 70% or more of the calories in the typical Western diet.  I think you would be hard pressed to find a nutritionist anywhere who would not believe that we could improve our health by reducing our intake of refined sugars, refined grains, refined vegetable oils and processed foods made from a combination of these ingredients.  Remember that in addition to reducing or eliminating these nutrient poor foods, the Paleo Diet also encourages people to eat more fresh fruits, vegetables, fish, seafood and grass produced meats and poultry.

10. How has the Paleo diet personally effected (sic) your life?

It is most gratifying for me to see how people worldwide have improved their health and well-being and in achieving their personal fitness and health goals.

11. Is there anything you would like to add?

Give the diet two weeks and see how you feel.  Also, have your blood drawn before and after two weeks on the diet and show your results to your physician.


Loren Cordain, Ph.D., Professor Emeritus

About Loren Cordain, PhD, Professor Emeritus

Loren Cordain, PhD, Professor EmeritusDr. Loren Cordain is Professor Emeritus of the Department of Health and Exercise Science at Colorado State University in Fort Collins, Colorado. His research emphasis over the past 20 years has focused upon the evolutionary and anthropological basis for diet, health and well being in modern humans. Dr. Cordain’s scientific publications have examined the nutritional characteristics of worldwide hunter-gatherer diets as well as the nutrient composition of wild plant and animal foods consumed by foraging humans. He is the world’s leading expert on Paleolithic diets and has lectured extensively on the Paleolithic nutrition worldwide. Dr. Cordain is the author of six popular bestselling books including The Real Paleo Diet Cookbook, The Paleo Diet, The Paleo Answer, and The Paleo Diet Cookbook, summarizing his research findings.

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“2” Comments

  1. Pingback: 5 Reasons For and Against taking a Multivitamin ::: Crossfit Hoboken LLC ::

  2. Our family just switched to paleo (85/15). We are working on modifying it somewhat based on the paleo for athletes since 3 of our kids cycle at the elite level. The problem that we are currently having is that our daughter has dropped too much weight. She eats until she is full and whenever she is hungry but she is still losing weight. Do you have any suggestions?

  3. After a quick loss of 10 lb on this diet, I have stopped losing weight, with no changes at all to how I am eating on the diet.
    My husband had the same experience.
    Explain . . . .

  4. Pingback: La Revue du Net Paleo #32 | Paléo Lifestyle

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