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: Low Carb Diet

Do Low-Carb Diets Cause Insulin Resistance?

A few weeks back in the “How to Improve Your Insulin Sensitivity” post, I apparently dropped a bit of a bombshell: that very low carb diets can induce insulin resistance. Many of you wrote to me asking about the effects of low-carb dieting on insulin sensitivity and wondering whether you should begin eating more carbohydrates to counter it. Well, maybe, but there’s a right way and a wrong way to eat carbs if you’re low carb. The wrong way is to just add a ton of carbohydrates on top of your low-carb Primal eating plan without changing anything else. Doing that, especially in perpetuity, will likely lead to weight gain, hyperinsulinemia, and even more insulin resistance. Bad all around.

Now, many people are perfectly happy on a perpetually low-carb diet. I function quite well on a low (but not very low) glucose diet, hovering around 100-150 grams a day and often dipping below that. I might go even lower if I didn’t love vegetables and berries so much. But, assuming you are experiencing physiological insulin resistance caused by a very low carb or ketogenic diet, what happens when you do want to incorporate carbohydrates in your diet?

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Dear Mark: A New Whole Grain Study, Advice for a Teen, Broken Leg Sprints, and The 3 Mules

For today’s edition of Dear Mark, we’ve got four questions and four answers. First up, there’s a new whole grain study, and some people are claiming it demonstrates that low-carb diets will lead to early mortality. Does it do anything of the sort, or is this yet another flawed observational paper? Next, a teen on top of his diet game who hopes he’s doing it right writes in with a list of questions. I answer them. Next, what can a person recovering from a broken leg do in the way of sprinting? Or should she just focus on recovery? Finally, a wild and free man is roaming California with three pack mules, flouting convention and leading a nomadic existence. Police are occasionally called and media attention is often attracted. What are my thoughts?

Let’s go:

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Is Constant Ketosis Necessary – Or Even Desirable?

Every day, I get links to interesting papers. It’s hard not to when thousands of new studies are published every day and thousands of readers deliver the best ones to my inbox. And while I enjoy thumbing through the links simply for curiosity’s sake, they can also seed new ideas that lead to research rabbit holes and full-fledged posts. It’s probably the favorite part of my day: research and synthesis and the gestation of future blogs. The hard part is collecting, collating, and then transcribing the ideas swirling around inside my brain into readable prose and hopefully getting an article out of it that I can share with you.

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Dear Mark: Peripheral Neuropathy, Primal Compromises for Love, and Carbs in Ketosis

For this week’s edition of Dear Mark, I’m answering three questions. First up, what could be causing a reader’s peripheral neuropathy? Could it be gluten, B12 and/or B6 deficiency, diabetes, or inadequate vitamin D? The second question concerns homemade pasta, a beautiful woman, and a dilemma: do you indulge in the former to make the latter happy? My answer may surprise you, or it may not. I’m not sure. But I think you’ll find it helpful regardless. And finally, can carbs and ketosis co-exist? They certainly can, but there’s a little trick to make it work.

Let’s go:

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How Quickly Can You Lose Weight?

Take your average guy or gal that decides they’re committed to finally losing that extra weight that’s crept on over the years. They’re going to eat healthy (primally, of course), start working out, and stop all the nonsense they know to be unhealthy. This might be you.

A few days go by, then a week. The scale is budging, but barely. “This is going to take forever! How long is this going to take?” We all want instant results, right? Well, what is realistic? What is safe? What is effective? And what can you expect when you attempt to lose excess body fat and reach your ideal body composition?

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7 Common Calorie Myths We Should All Stop Believing

Many people think weight loss is simply about cutting calories. They believe that to lose weight, you must reduce calories (either eat less or burn more), to gain weight you must add calories, and to maintain weight you keep calories constant. To these folks, calories in, calories out is the only thing that matters. They usually oppose the Primal Blueprint because they assume that we “deny” the importance of calories in weight loss.

Well, they’re wrong. I don’t deny the importance of calories. Calories absolutely count. And if someone has lost weight, they have necessarily expended more calories than they consumed. That said, there are some major misconceptions about calories, body weight, fat loss, and health. These calorie myths are often rooted in truth but presented in black-or-white terms that are useless at best, harmful at worst, and do little to help the average person lose body fat.

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