Meet Mark

Let me introduce myself. My name is Mark Sisson. I’m 63 years young. I live and work in Malibu, California. In a past life I was a professional marathoner and triathlete. Now my life goal is to help 100 million people get healthy. I started this blog in 2006 to empower people to take full responsibility for their own health and enjoyment of life by investigating, discussing, and critically rethinking everything we’ve assumed to be true about health and wellness...

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Category: Diet & Nutrition

5 Studies I’d Like to See

Imagine money is no object. Imagine you wield absolute control over the scientific community and can direct it to run whichever study you desire. If you can dream it up, they’ll get the subjects, produce the money, and make it happen. All you need to come up with is the overarching design. What would you choose? What do you wonder? What questions do you want answered once and for all?

Here’s what I’d choose:

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Dear Mark: Folate Retention in Beans, Seeds, and Greens, Blended Liver Folate, No Vegetable/Fruit Full Study

For today’s edition of Dear Mark, I’m answering three questions. You guys had more questions about folate. Since it’s such an important vitamin, I answer those first. Then I discuss the study mentioned in last week’s Dear Mark in which removing polyphenol-rich fruits and vegetables from the diet improved oxidative stress markers instead of worsening them. I got my hands on the full study, so I have more to say on the subject.

Let’s go:

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Guest Video: Stocking a Primal Pantry

Today’s awesome guest video is served up by Christa Orecchio, Founder of The Whole Journey. I think you’ll enjoy her personal shopping tour and helpful tips today.

Stocking a Primal kitchen can be fun but sometimes also tricky as you want to be sure products use the correct ingredients and sourcing. Today I’ll go beyond the basics of a Primal kitchen and help you find the most versatile and flavorful options in the store! I think you’ll be surprised by a few of them.

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Can Keto Actually Work For Hard-Training Endurance or Power/Strength Athletes?

Keto is red hot these days, and it’s not going away anytime soon. Call it the latest dietary fad, but keep in mind a great insight Robb Wolf told Joe Rogan on his podcast: keto was “likely the default human metabolic state” over the past 2.5 million years of human evolution. Only with the extremely recent (on the evolutionary timeline) advent of civilization have we been stuffing our faces with carbs and snuffing out our magnificent ability to generate ketones as a clean-burning alternative fuel source to dietary carbohydrates. And we certainly were compelled to evolve a highly efficient mechanism to keep our high energy demand brains fueled with glucose or the glucose-like substitute of ketones at all times—for this was a matter of life or death in primal times. When our ancestors were starving, they needed to keep working hard, and concentrating hard, to find food!

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A Look At Swerve Sweetener

As we move into a new era of health awareness, there’s more variety than ever available to us. Overall, this is a very good thing—the average Primal consumer now has far greater access to a wider range of organic, free range, pastured, GMO-free, wholesome foods and products.

But this presents something of a dilemma when it comes to gray areas like sweeteners. While I don’t have much of a sweet tooth myself, I’m not a anti-sweetener purist either. While I lean toward stevia or monkfruit, I get a lot of questions about sugar alcohols, in particular a product called Swerve Sweetener, particularly from the keto crowd. 

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Dear Mark: Vitamin B and Lung Cancer, Folate Stability in Liver, and Less DNA Damage on No Produce

For today’s edition of Dear Mark, I’m answering three questions from readers. First, what do I make of the recent study showing a link between lung cancer in men and supplementation with vitamin B6 and vitamin B12? Next, how stable is folate in liver? Other foods with high folate content before cooking, like legumes and greens, lose a lot during cooking. And finally, what’s my take on the old study where subjects’ markers of oxidative damage improved after eating a diet bereft of produce?

Let’s go:

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