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
For today’s edition of Dear Mark, I’m answering three questions from readers. First, what’s the deal with IGF-1, growth hormone, and intermittent fasting? Some people say fasting increases growth hormones, while others say it decreases them. Who’s right? And what’s it all mean for our health? Next, how can a former CrossFitter ensure she’s maintaining her former fitness levels? And finally, what’s my take on Barre training and other “feminine” training schools?
Let’s go:Read More
Jean-Paul Sartre in one of his famous plays said, “Hell is—other people.” I think most of us might sympathize with that claim depending on the day and the person we’re dealing with. On the flip side, people can be the source of our greatest joys. His sentiment, regardless, speaks to the strong impact others can have on us. Whether we like it or not, we all live (and need to live) in some relation to others. None of us exist in a vacuum, and research on extreme isolation suggests the real hell on earth might be exactly that. So make no mistake—how people make us feel is not just the stuff of poetry and philosophy. Other people can and do influence our immediate physiology as well as our ongoing health. What does this process look like though? How does it play out in our lives? Let’s examine a few examples.Read More
There are many meaningful reasons people go Primal: they want to improve their fitness, increase their longevity, feel younger, reverse lifestyle conditions, heal hormonal imbalances, enhance fertility, get off prescription medications, and lose fat. With regard to losing fat, some want to lose a good deal of it—to significantly alter their body composition. This goal, while it has the power to shift one’s entire health trajectory (not to mention life experience) may also be the most likely to come with unforeseen, even undesired results. I’m talking particularly about those who undergo dramatic transformations—the kind that can leave them feeling incredible, enjoying vitality, and (in particular) looking substantially different.Read More
The entire premise of the Primal Blueprint is enabling you to be the architect of your health and happiness. If we can identify the environmental triggers and selective pressures under which the human genome developed, we’ll have a great roadmap for engineering our optimal lifestyle. And for the most part, it works. Not everyone will get the exact body they desire. You won’t all lose every extra pound. I can’t guarantee a six pack or a complete eradication of baby weight. But all in all, eating and living this way seems to produce good results. You can, it seems, affect your health, body composition, and fitness.
But genes still matter. And there’s a large trove of evidence showing that a person’s genetics are really good at predicting their risk of obesity.Read More
Every day we’re barraged by “good ideas”—all the things we should be doing with our lives and could start doing today if we really cared enough. Too much advice can overwhelm us, and, more importantly, it can inflate the power of “should.” It can cement an insidious (and, in my experience, ineffective) framework in our minds. We risk framing every choice—from work to pleasure—as an obligation. Doing so burdens life with a constant sense of onus, constraint and deprivation—not exactly the stuff of grand motivation. In my experience, we aren’t in for much fun or long-term success with that brand of approach. Luckily, there’s a better way to talk to ourselves.Read More
If you follow health news, you might be thinking exercise doesn’t matter when you’re trying to lose weight. Vox just published a big piece showing how useless exercise alone is for weight loss. The NY Times says “eating less” is way more effective than “exercising more.” Obesity researchers like Gary Taubes and Yoni Freedhoff—who don’t agree on much else—both think using exercise to fix obesity is futile. I’ve always said that 80% of your body composition is determined by your diet, not how you exercise. And everyone knows it’s really hard, bordering on impossible, to out exercise a bad diet. You might be able to out exercise a bad diet if all you care about is abs and race times and make it your job, but eventually your poor health will catch up with you.
That doesn’t mean exercise doesn’t matter for weight loss, though. It does.Read More