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

Are You Ready? 8 Tools and Tips For Your Challenge Prep

How many of you will be joining us for the Challenge next week—and how many for the first time? (I’d love to see a show of hands in the comment section.)

The cool thing about the Challenge each year is this: everybody comes at it from a different place. Some folks are hundred pounds overweight and haven’t exercised in years. Some are at the top of their Primal game but love the community engagement and chance to encourage others. Most are at every stage in between.

Behind every participant across that spectrum is a fascinating story. Your story. The one in which you haven’t quite had the life you’d hoped lately—and the one in which you claim it back.

Today I’ve got some ideas and resources for you to consider. If you’re on the fence about joining us, maybe these can get you over the hump and get you committed. I sure would like to see you with us.

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Supplements For Brain Health: What Nutrients and Supplemental Foods Make the Most Difference

As humans, our most important bodily endowment isn’t our claws, sharp teeth, powerful haunches, iron grips, prehensile tails, venomous secretions, or aerosolized musk. It’s the brain. We use it to shape the world around us, to bend physical reality to our will, to manipulate matter and create powerful technological terrors. These days, the human brain is more important than ever. If you want to enjoy life, pursue and succeed at your passions, to conquer your little corner of reality—you need a healthy brain. Brain health is key to total health—and quality of life.

By some analysis at least, however, neurogenerative diseases remain on the rise and take an ever more extreme emotional and economic toll. So, how do we keep our brain health intact? While much of it comes down to doing the things that keep your brain healthy and avoiding the things that harm it—exercising instead of sitting on the couch, breathing exclusively fresh air instead of tobacco smoke, sleeping instead of staying up—another big variable is the food we eat.

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Dear Mark: Saturated Fat More Harmful to Liver Than Sugar?

For today’s Dear Mark, I’m answering just one question from a reader. What are we to make of the new study purporting to show that saturated fat is the most harmful substance a liver can encounter? Should we remove all traces of it from our diets? Should we eat pure sugar? Quaff soybean oil? How relevant is an overfeeding study to a community of people dedicated to eating a sustainable, weight-reducing or -maintaining diet that includes saturated fat?

Let’s find out:

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8 Misconceptions About Fiber

The tricky thing about fiber is that it’s not a monolith. There are dozens of varieties. Some of them perform similar functions in the body, but others have extremely unique effects. Some rend your colonic lining to stimulate lubrication. Some turn into gelatinous slurries. But we can’t talk about fiber without understanding that the word describes a variety of compounds. As such, anyone making declarative statements about “fiber” without differentiating between the different types and their effects isn’t being accurate (except for me in that exact sentence).

This leads to a lot of confusion. People make blanket statements that might be true for some types of fibers and incorrect for others. 

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Dear Mark: Tick Red Meat Allergy, Seventh-day Adventists, Magnesium and Carnivory

For today’s edition of Dear Mark, I’m answering a few questions and comments from last week’s post on the carnivore diet. First, Dawn gives us the unfortunate but necessary information that it’s not just the lone star tick who causes red meat allergy. Great. Second, what are 7-Day Adventists so healthy? Is it all because of their tendency to avoid meat, or is there something else? And third, I give some more thoughts on magnesium requirements on a carnivorous diet.

Let’s go:

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The Carnivore Diet: Pros, Cons, and Suggestions

All-meat diets are growing in popularity. There are the cryptocurrency carnivores. There’s the daughter of the ascendant Jordan B. Peterson, Mikhaila Peterson, who’s using a carnivorous diet to stave off a severe autoimmune disease that almost killed her as a child. The most prominent carnivore these days, Dr. Shawn Baker (who appears to eat only grilled ribeyes (at home) and burger patties (on the go), recently appeared on the Joe Rogan Experience and Robb Wolf’s podcast, and is always breaking world records on the rower. Tons of other folks are eating steak and little else—and loving it. There are Facebook groups and subreddits and Twitter subcultures devoted to carnivorous dieting.

What do I think?

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