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: Fats

Is Keto for Everyone?—Cautions, Caveats, and Contraindications

In a few months, I’ll be releasing a book extolling the virtues of a ketogenic diet. I’m currently several months into a ketogenic experiment, which is going well. I just wrote a Definitive Guide explaining why you should consider going keto. I’m on record as stating that everyone should dip into ketosis from time to time. You’d think I’d recommend that everyone go keto. Right?

There are caveats. There are contraindications. There are very good reasons for a person not to go keto, or at least to take a few extra precautions. Today, I’m going to tell you when you should exercise particular care when considering a ketogenic diet.

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Dear Mark: Fat Roundup

Last week, I wrote about my 16 favorite fats. You had questions. For today’s edition of Dear Mark, I’ll answer some of them. First, I explain why my keto salad recipe didn’t include any dense protein. Second, I explain a few options for steaming heavy cream. Third, I tell where I get my mac nuts. Fourth, I discuss whether you should worry about dioxins in pastured eggs. And fifth, I address the question of dietary fat and fatty liver.

Let’s go:

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My 16 Favorite Fat Sources (Plus My Latest Big-Ass Salad)

Going ketogenic has made me hone in on my fat sources even more than before. This is an essential practice for anyone seriously pursuing a ketogenic diet. As fat will comprise the majority of your calories, you need to maximize the nutrition you’ll obtain from the fats you choose. You could technically go keto using canola oil, refined coconut oil, and MCT oil powder—many of the ketogenic formulas used in epilepsy clinics are highly processed and refined—but I wouldn’t recommend it. Micronutrients still matter. They arguably matter even more when your food sources are restricted.

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10 Tips to Boost Your Serotonin

Serotonin is a major regulator of mood and depression risk. These are important, vital roles, to be sure. Your mood describes how you experience and interpret the world. If it’s consistently bad, you’regoing to have a rough time. Yet, serotonin is much more than the “feel-good hormone.” It also influences sexual desire and helps us remember. It’s the precursor to melatonin, the neurotransmitter that allows us to sleep.

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Anxiety: Are Nutritional Deficiencies a Common Cause?

As big-brained hominids, humans have the unique ability to think about the future. The very fact that we can perceive and plan for the time ahead has allowed us to conquer the earth, but it comes with a downside: anxiety. If extreme rumination on past events characterizes depression, worrying about imagined future scenarios describes anxiety.

This inherent capacity and human tendency to think ahead must be reined in and controlled. One way we can do that is make sure we’re getting enough of the nutrients that studies indicate may play an etiological role in anxiety.

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5 Obscure Nutrients: Why We Need Them and How Grok Got Them

Everyone reading this knows about the macronutrients. You’re all eating enough protein, fat, carbs, and the various sub-categories, like fiber, omega-3s, MUFAs, SFAs, linoleic acid, and so on. You know the major micronutrients, like magnesium, calcium, vitamin B12, and most of the minor (but still vital) ones, like plant polyphenols, iodine, and vitamin K2. Today I’ll be talking about the truly obscure nutrients. The ones health food hipsters were super into like, five years ago (“I’m taking beta-1,3-glucan, you probably haven’t heard of it, there’s only one group at Hokkaido University doing any research, you can only get it off the DarkNet using bitcoins”). The ones Grok was super into like, 50,000 years ago.

What are they, what do they do for us, and, if they’re so great, how did Grok obtain them?

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