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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Tag: dear mark

Dear Mark: Fasting Issues, Pullup Neck Pain, and Red Palm Oil

For today’s edition of Dear Mark, I’m answering three questions. The first one comes from Neda, who’s experiencing some issues that may be related to her fasting schedule. How should she modify her fasting? Or should she eliminate it altogether? The second question concerns a common issue: neck pain during pullups. Why does it happen and how can we avoid it? And finally, what’s the deal with red palm oil? I give my take on the controversial oil, drawing on randomized controlled trials and personal feelings about orangutans to arrive at my conclusion.

Let’s go:

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Dear Mark: Budgeting, Calcium, Supplements, High Cholesterol, and Chinup Replacements

For today’s edition of Dear Mark, I’m answering five questions, all coming from a single reader email. First, Rosa asks about buying high-quality produce and grass-fed meat for her family on a budget. Can it be done? If not, what should she do? Second, she wonders whether she’ll get enough calcium eating this way. It’s a valid concern, seeing as how basic Primal eating often eliminates dairy. I try to assuage her. Third, if the Primal Blueprint is such a healthy, nutrient-replete lifestyle, why do I sell supplements? How does one reconcile the two seemingly contradictory concepts? Fourth, should Rosa be worrying about eating a high-fat diet if she’s taking meds for high cholesterol? And fifth, what are some effective replacements for chinups and pullups that can be done at home sans equipment?

Let’s go:

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Dear Mark: Metformin for Life Extension, Too Many MEDs, MED for Lifting Addict, and Horseback Riding

For today’s edition of Dear Mark, I’m answering four questions. First, does the diabetes drug metformin have life-extending potential for non-diabetics? Then, the final three questions come from the comment board of last week’s Minimum Effective Dose post. First, is it possible to try to do too many minimum effective dose workouts in a week. Yes, absolutely. I explain why a reader who seems to want to incorporate every single routine listed in last week’s post probably shouldn’t try. Next, what if someone truly loves training? Should he or she still try to figure out the minimum effective dose for his workouts? And finally, is horseback riding an effective stand-in for walking?

Let’s go:

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Dear Mark: Ketosis and Testosterone, Dehydration Hormesis, and Isomalto-Oligosaccharides

For today’s edition of Dear Mark, I’m answering three questions. The first one concerns a potentially combative and controversial topic: ketogenic diets. What’s the deal with their effect on testosterone? You can find keto anecdotes across the web both inspiring and flaccid, but what, if anything, does the science say? Next, might there be a way to derive beneficial hormetic effects from acute bouts of dehydration? It seems like every other stressor can actually make a person stronger, so perhaps an otherwise wholly negative one like dehydration might as well. And finally, is the prebiotic fiber known as isomalto-oligosaccharide safe and/or good to eat?

Let’s go:

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Dear Mark: Exercising (and Eating) in the Heat; Post-Antibiotics Gut Health Support

For today’s edition of Dear Mark, I’m answering a pair of questions from you folks. First up, what with the crazy heat wave sweeping much of the planet, a reader writes in asking about the best way to eat and move in the heat. Should you cease all activity? Should you modify your normal movement patterns and eat and drink differently to keep the heat at bay? Read on to find out. Next, how should a person deal with and support the post-antibiotics gut biome? What can we do to mitigate the negative effects broad-spectrum antibiotics have on our gut bacteria?

Let’s go:

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Dear Mark: Melatonin Supplementation, Overcoming Previous Poor Health, and Is HIIT Too Stressful for Women?

For today’s edition of Dear Mark, I’m answering three questions from readers. First up, what’s the deal, exactly, with melatonin supplementation? Is it harmful? Dangerous? Will it impair our body’s own production of melatonin? Second, a reader wonders whether his past poor health decisions are sabotaging his health today. Even if he’s feeling great now, shouldn’t he worry about the permanent effects from all that pizza he ate and sleep he didn’t get back in the day? And finally, some people recommend against sprinting or high intensity interval training for women. Is it true? Should women only go gently into the gym to tread lightly on ellipticals and avoid all that sweaty, icky fast stuff?

Let’s find out:

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Dear Mark: Balancing Strength with Military Conditioning; Sitting in a Squat Position

For today’s edition of Dear Mark, I’m answering two questions from readers. First comes from William, an officer in the Navy who likes lifting heavy but also needs to score well on the physical fitness assessment, which involves a 1.5 mile run, pushups, and pullups. His taste for basic 5×5 strength work has left his running performance lacking. What can he do to improve the run without eating into his strength numbers? After that, I explore whether sitting on a footstool or medicine mall in the squat position is better than just sitting in normal chair.

Let’s go:

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Dear Mark: Nutrient Deficiencies and Fatigue, Anxiety, CLA Supplements, and Plant-Derived Oils

For today’s edition of Dear Mark, I’m answering four questions from readers. First up, are there any specific nutrient deficiencies that can contribute to fatigue? Which minerals and vitamins should you shore up when experiencing malaise? Next, what’s the deal with anxiety? Does it serve an evolutionary purpose, or is it just a pathological condition? Third, is there a place for conjugated linoleic acid (CLA) supplementation in a healthy diet and lifestyle? I dig into the studies to help you decide. And finally, what plant-derived oils beside just avocado oil are good to use when staying Primal?

Let’s go:

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Dear Mark: The Linoleic Acid Content of Phosphatidylserine, and Optimal Sleeping Position/Location

For today’s edition of Dear Mark, we’ve got a two-parter. First up, what’s the deal with phosphatidylserine, one of the (most crucial) ingredients in Primal Calm? It’s a derivative of linoleic acid-rich oil, so what’s it doing in one of my supplements? Find out if you need to worry about undue levels of linoleic acid from taking Primal Calm. Then, are there any benefits to sleeping on one’s back as opposed to on one’s side? And how about sleeping outdoors under the stars and being woken up by the birds — is there any reliable reason that would improve the quality of our sleep and help us wake up more energized?

Let’s find out:

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Dear Mark: Your Milk Questions Answered

For today’s Dear Mark, I’m responding to as many of the questions and concerns relayed in the comment section of last week’s raw milk post. You guys had a lot of them, ranging from whether raw milk can help with eczema and adult asthma, if homogenization is dangerous, why raw milk might taste and smell fishy, to how many people get sick from pasteurized milk. I also respond to reports of raw milk not being a panacea for immune health, and even an active impediment to it.

Lots of ground is covered today, so let’s get right to it.

Here we go:

Is homogenization dangerous?

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