The popular story of how low-carb diets work goes something like this: Reducing your carbohydrate in...
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...Tell Me More
Both fasting and carb-restriction appear to operate along similar physiological pathways. Both lower carbs. Both increase fat-adaptation. Both have the potential to get you into ketosis. Both lower insulin and blood sugar.
But is one better than the other? Are there certain scenarios in which an intermittent fasting protocol works better than a low-carb diet, and vice versa?
Let’s find out if the distinction matters.
And what scenarios are most impacted by any difference.Read More
Good morning, folks. With next week’s The Keto Reset Diet release, I’ve got keto on the mind today—unsurprisingly. I’ve had a lot of questions lately on duration. As I’ve mentioned before, a good six weeks of ketosis puts in place all the metabolic machinery for lasting adaptation (those extra mitochondria don’t evaporate if/when you return to traditional Primal eating).
But what about the other end of the issue? How long is too long? I don’t do this often, but today I’m reposting an article from a couple of years ago on this very topic. I’ve added a few thoughts based on my recent experience. See what you think, and be sure to share any lingering questions on the question of keto timing and process. I’ll be happy to answer them in upcoming posts and Dear Mark columns.Read More
For today’s edition of Dear Mark, I’m answering three questions from readers. First up, what’s the best way to increase your HDL particle count? There are dozens of articles explaining how to reduce LDL-P, but what about HDL-P? Second, are ketones right—or necessary—for everyone? The final question comes from a reader who, despite sticking with the diet for four months, hasn’t felt the fabled “keto energy.” Should she try ketone supplements, give it more time, or what?
Let’s go:Read More
If you’ve been reading this blog for any amount of time, you know I’m always interested in exploring those time-tested bits of advice, those old wives’ tales, that folk wisdom handed down generation over generation because they’re often right, or at least contain a kernel of truth. And if a piece of conventional folk wisdom turns out to be wrong or misguided, understanding why it endured for so many years is a fun exercise and usually reveals other messages and truths. Today, I’m looking at the importance (or lack thereof) of breakfast. For years, you’ve heard how important breakfast is. Your grandma says it. Your doctor probably scolds you if you’re not eating it. We all grow up having this “fact”?breakfast is the most important meal of the day?drilled into our subconsciouses. Even the people who just don’t feel hungry in the morning feel guilty about it and compelled to stuff something into their craws.
Is it right or wrong?
For today’s edition of Dear Mark, I’m answering three reader questions. First, if things are going well on a relatively low-calorie intake, should you just keep on keepin’ on or should you increase food intake to “get ahead” of your needs? Next, what’s the deal with a study showing a high-carb diet is better for testosterone levels than a high-protein one? What does this mean for your Primal way of eating? And finally, can an improvement in heart rate variability after a carb refeed indicate a greater need for carbs?
Let’s go:Read More
For today’s edition of Dear Mark, I’m answering three reader questions. First, do anaerobic workouts—sprints, lifting, etc.—interfere with your ability to become a fat-burning, aerobic beast, or can you integrate them? Next, in last week’s post I talked a lot about glycogen depletion in the context of the “sleep-low” carb partitioning. How can we actually achieve this without doing the intense intervals the elite triathletes were doing in the study? And finally, does carb-fasting after strength training also work?
Let’s go:Read More