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

Dear Mark: Iron Followup

Last week’s post on iron levels got a big response and garnered a ton of questions from you guys. Today, I’m going to clarify a few things and answer as many questions as I can. First, do iron and ferritin levels mean different things for men and women? If so, how do those differences manifest? What about premenopausal women vs postmenopausal women? Second, what do we make of the fact that ferritin is also increased in times of inflammation? Is there a way to distinguish between elevated ferritin caused by inflammation and elevated ferritin caused by high iron? Third, is desiccated liver a good option for liver haters? And finally, I share some exciting plague news.

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Is Iron the New Cholesterol?

One thing I’ve realized being in this game for so long is that if you’re convinced that meat truly is deadly, you’re not going to stop looking for reasons why. They’ve tried blaming just about every part of meat over the years, including the protein itself, the saturated fat, the cholesterol, the methionine, the char on BBQ, and even the obscure compounds like TMAO or Neu5gc. The latest component of meat they’ve zeroed in on is iron—the essential mineral responsible for energy production and a host of other vital functions.

The experts’ track record with all the other “evil meat components” has many of my readers skeptical, so they asked me to weigh in on iron.

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Explaining Keto and Hair Loss (and Why Any Dietary Change Might Cause It)

So you start your keto diet, and things are going well. You’re dropping excess fat, your carb cravings are noticeably reduced, your energy is steady throughout the day… and then one day you start to have the sneaking suspicion that you’re shedding more hair than usual. After a few days, it’s unmistakable: your hair is definitely falling out at an alarming rate.

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Keto for Men: 6 Tips to Optimize Your Results

Men occupy an interesting place in the health sphere. While there’s a disparity—albeit one that’s approaching parity—between men and women in the conventional medical literature, in the alternative health world, it’s flipped. Women are a “special interest” group, and their specific health issues and special considerations related to diet and exercise receive a lot of attention, often as a way to counteract the conventional imbalance—and because women tend to be higher consumers of health information. I have far more posts (including a post on Keto For Women) explicitly directed toward women and women’s issues (and the same can be said across many ancestral health sites).

Men are assumed to be “the default,” requiring no special consideration, but is that actually true?

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Dear Mark: How Do Fermented Food and Meat Interact?

For this week’s Dear Mark, I’m answering a question from a reader about a topic I thought I’d covered (so did they) already. A quick look through the archives (hey, I can’t remember absolutely everything I ever wrote) showed that I had not, so here we go. It’s all about whether fermented foods—sauerkrauts, kimchis, pickles, yogurts, and any other food that has been acted upon by probiotic bacteria—make eating meat healthier and more enjoyable. From the start, I suspected that they do, but I had to confirm it in the scientific literature.

Let’s find out:

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20 Keto Snacks (All Under 5 Minutes)

As you get keto-adapted, most people find the inclination to snack (at least snack frequently) decreases. But that can take a bit of time. It’s not necessarily something to expect your first week (although some folks do begin to experience the change within a few days, provided they’re eating enough overall). Still, even the most long-term keto dieters will want a snack now and then—or will replace a meal with a snack because they’ve settled into a solid keto nutritional strategy and don’t always need three regular “meals” most days.

My theory is that meals, and particularly snacks, should be simple and easy. Few of us have time to make elaborate meals every day, and when we’re living into a new eating strategy, convenience matters. In that spirit, here are 20 keto snack ideas that take 5 minutes or less to make. Enjoy! And let me know your favorite—from this list or from your own keto or Primal practice.

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