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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Dear Mark: “High-Fat Diet,” Potential Type 1 Diabetes, Keto Cure?

February 12 2018 - For today's edition of Dear Mark, I'm answering three questions from readers. First up, what are we to make of a recent study claiming to show that "high-fat diets" are harmful to rodents? Is it truly...

Keto and Type 2 Diabetes

February 07 2018 - If you think of Type 2 diabetes as carbohydrate intolerance, the natural dietary response should be to restrict the offending dietary component. And when this occurs—when diabetic patients restrict...

Dear Mark: Exercise Rapid Fire, Hunting, Pull-ups, Type 1 Diabetes

January 22 2018 - For today's edition of Dear Mark, I'm answering four questions from readers. The first question is actually 5 questions, so it's closer to 8 questions overall. Good deal. First, I answer 5 questions a...

How Being Diagnosed with Type 1 Diabetes Improved My Entire Life!

June 09 2017 - It’s Friday, everyone! And that means another Primal Blueprint Real Life Story from a Mark's Daily Apple reader. If you have your own success story and would like to share it with me and the Mark’...

A Primal Look at Gestational Diabetes

February 14 2017 - Every pregnant woman I've ever known has hated the oral glucose tolerance test. Yet, they still do it. Drinking a tall glass of sickly sweet orange-flavored glucose water on an empty stomach is thorou...

How I Ditched My Diabetes Medication and Found a New Life Plan

November 28 2014 - It’s Friday, everyone! And that means another Primal Blueprint Real Life Story from a Mark's Daily Apple reader. If you have your own success story and would like to share it with me and the Mark’...

Dear Mark: Acid Load and Type 2 Diabetes, and the Safety of Homemade Baby Food

November 18 2013 - For today's edition of Dear Mark, we've got a question about dietary acid load and type 2 diabetes. A new study's just come out suggesting that the acid load of the diet does indeed have a significant...

Dear Mark: Calorie Intake While Nursing, Tom Hanks and Type 2 Diabetes, and DHA Bad for Adults?

October 21 2013 - For today's edition of Dear Mark, we've got a three question roundup. First, I hear from a nursing, weight-lifting, child-chasing mother of four who's concerned about the amount of food she's craving ...

Dear Mark: Reader Issues, Chocolate Toxins, Chipotle’s Revelations, plus Red Meat and Diabetes Redux

July 08 2013 - I'm covering a smattering of issues in today's edition of Dear Mark. First, I help a reader with some issues. It's a somewhat typical story with any lifestyle change - the stall. Why might it be occur...

Dear Mark: “High-Fat Diet,” Potential Type 1 Diabetes, Keto Cure?

February 12 2018 - For today's edition of Dear Mark, I'm answering three questions from readers. First up, what are we to make of a recent study claiming to show that "high-fat diets" are harmful to rodents? Is it truly...

Keto and Type 2 Diabetes

February 07 2018 - If you think of Type 2 diabetes as carbohydrate intolerance, the natural dietary response should be to restrict the offending dietary component. And when this occurs—when diabetic patients restrict...

A Primal Look at Gestational Diabetes

February 14 2017 - Every pregnant woman I've ever known has hated the oral glucose tolerance test. Yet, they still do it. Drinking a tall glass of sickly sweet orange-flavored glucose water on an empty stomach is thorou...

Dear Mark: Acid Load and Type 2 Diabetes, and the Safety of Homemade Baby Food

November 18 2013 - For today's edition of Dear Mark, we've got a question about dietary acid load and type 2 diabetes. A new study's just come out suggesting that the acid load of the diet does indeed have a significant...

Dear Mark: Calorie Intake While Nursing, Tom Hanks and Type 2 Diabetes, and DHA Bad for Adults?

October 21 2013 - For today's edition of Dear Mark, we've got a three question roundup. First, I hear from a nursing, weight-lifting, child-chasing mother of four who's concerned about the amount of food she's craving ...

Dear Mark: Reader Issues, Chocolate Toxins, Chipotle’s Revelations, plus Red Meat and Diabetes Redux

July 08 2013 - I'm covering a smattering of issues in today's edition of Dear Mark. First, I help a reader with some issues. It's a somewhat typical story with any lifestyle change - the stall. Why might it be occur...

What About Type 1 Diabetes?

October 25 2012 - You hear a lot about type 2 diabetes on this and other sites in the community. It's easy to see why: type 2 diabetes is the "lifestyle" diabetes, the preventable one, the one that "doesn't have to hap...

Does a High-Fat Diet Cause Type 2 Diabetes?

August 24 2011 - This is a special guest post from Denise Minger (thank you, Denise!). When fear-inducing news headlines hit the papers (and airwaves and iPads...) -  High-Fat Diet Linked to Breast Cancer, Eating Who...

Does Eating Red Meat Increase Type 2 Diabetes Risk?

August 16 2011 - If you already eat Primal, your email inboxes are most likely filling up with links to the story. Concerned mothers clutching the local paper's "Health" section are calling (or, if they're hip, textin...

Did a Wrinkle in Human Evolution Predispose Us to Diabetes?

February 28 2011 - A new mice-with-an-engineered-human-genetic-deficiency study is out that promises to shed light on why humans are so darn diabetic and obese - and the cause is an evolutionary "mistake." A deficiency ...

Dear Mark: Exercise Rapid Fire, Hunting, Pull-ups, Type 1 Diabetes

January 22 2018 - For today's edition of Dear Mark, I'm answering four questions from readers. The first question is actually 5 questions, so it's closer to 8 questions overall. Good deal. First, I answer 5 questions a...

Ask the Coach: Primal Health Coaches Answer Your Questions

June 25 2018 - A couple weeks ago I asked for ideas for our Primal Health Coaches—what questions have you ever wanted to ask a Primal Health Coach? Many of you wrote in, and I loved reading your ideas. There were ...

11 (Non-Dietary) Actions That Enhance Insulin Sensitivity

May 17 2018 - Insulin does a lot of important things for us. It pulls glucose from the blood and fritters it away into our cells to be burned for energy or stored as glycogen. It prevents hyperglycemic toxicity to ...

5 Studies I’d Like to See

March 27 2018 - Imagine money is no object. Imagine you wield absolute control over the scientific community and can direct it to run whichever study you desire. If you can dream it up, they'll get the subjects, prod...

Can Keto Actually Work For Hard-Training Endurance or Power/Strength Athletes?

March 21 2018 - Keto is red hot these days, and it’s not going away anytime soon. Call it the latest dietary fad, but keep in mind a great insight Robb Wolf told Joe Rogan on his podcast: keto was “likely the de...

Slow Moving Training: Yoga

February 27 2018 - I like intensity when I train. Lifting heavy, running sprints, playing Ultimate Frisbee. I keep it brief, and the foundation is always a lot of slow movement throughout the day—easy runs, long walks...

Dear Mark: BCAAs, and That Weightlifting Article with All the Exclamation Points

January 08 2018 - For today's edition of Dear Mark, I'm answering a pair of questions. First, a new study comes out and claims that branched chain amino acids increase the risk of insulin resistance and, eventually, di...

CrossFit Training: How to Support Overall Wellness and Longevity with Primal

August 17 2017 - There are some who hold the view that at birth, each of us is allotted a finite supply of energy which exercise depletes, thus hastening our demise. An intense regimen like CrossFit, in this paradigm...

CrossFit Training: How to Add Mass and Build Strength with Primal

August 01 2017 - Gaining mass and building strength while CrossFitting should be a breeze. You're lifting heavy things using compound full-body movements like squats, deadlifts, and presses, providing a potent growth ...

CrossFit Training: How to Lose Fat with Primal

July 27 2017 - Note: Many of you have written to me wondering about my newfound obsession with CrossFit. I'm responding to a steady stream of requests from CFers who want to do Primal but have been led to believe th...

A Primal Look at Gestational Diabetes

February 14 2017 - Every pregnant woman I've ever known has hated the oral glucose tolerance test. Yet, they still do it. Drinking a tall glass of sickly sweet orange-flavored glucose water on an empty stomach is thorou...

Ask the Coach: Primal Health Coaches Answer Your Questions

June 25 2018 - A couple weeks ago I asked for ideas for our Primal Health Coaches—what questions have you ever wanted to ask a Primal Health Coach? Many of you wrote in, and I loved reading your ideas. There were ...

The Roots of Depression: How Much Does Modern Culture Have to Do With It?

April 17 2018 - I can't complain about my existence in modern culture. My life is great. I have a loving family. My kids are happy and successful. My wife is a friend and lover and confidante and partner. Business is...

Dear Mark: Delving Further Into Dopamine

December 11 2017 - For today's edition of Dear Mark, I'm delving more deeply into dopamine. Readers asked some great questions and made some interest comments in the comment board of last week's post on dopamine, and to...

Gender Bias in Medical Research: How It Operates and Why It Matters

October 17 2017 - Some months ago the issue of gender bias in medical research came up on the comment board. It was certainly an issue I'd occasionally read about. But I'm also a proponent of lifestyle design and inter...

Where I Part Ways with the Popular Keto Movement

October 04 2017 - The explosive growth of interest in the ketogenic diet has been a net good for the state of nutrition. For one, people have accepted the fact that eating fat won't kill you, and they're even getting c...

Testosterone Supplementation: My Primal Take

September 20 2017 - After I turned 60, a routine checkup showed that I had lower-than-normal free testosterone levels. I hadn't noticed anything that would have alerted me. No symptoms. No indication. Everything worked w...

How to Find Mental Strength When Dealing With Illness and Injury

August 31 2017 - However tough, rugged, and badass we might consider ourselves, the fact is none of us is indestructible. The human body, for the miracle that it is, is vulnerable as well as mortal. Even those of u...

More on Adaptogens: Ashwagandha, Astragalus, and Holy Basil

June 29 2017 - Last week I waded into the adaptogen theme, examining the many ins and not-so-many outs of American and Asian ginseng. It got me thinking—why not keep the ball rolling? The ginseng varieties I menti...

Is Keto for Everyone? Cautions, Caveats, and Contraindications

June 21 2017 - In a few months, I'll be releasing a book extolling the virtues of a ketogenic diet. I'm currently several months into a ketogenic experiment, which is going well. I just wrote a Definitive Guide exp...

Dear Mark: Calorie Intake While Nursing, Tom Hanks and Type 2 Diabetes, and DHA Bad for Adults?

October 21 2013 - For today's edition of Dear Mark, we've got a three question roundup. First, I hear from a nursing, weight-lifting, child-chasing mother of four who's concerned about the amount of food she's craving ...

What About Type 1 Diabetes?

October 25 2012 - You hear a lot about type 2 diabetes on this and other sites in the community. It's easy to see why: type 2 diabetes is the "lifestyle" diabetes, the preventable one, the one that "doesn't have to hap...

Monday Musings: Intergenerational Diabetes, New and Improved Pasteurization, Sitting is Still Bad, and Really Old Wine

January 17 2011 - Diabetes is that rare brand of nasty disease that fails to strike real, visceral fear. It doesn't carry the weight of a cancer or an AIDS or a heart disease. It's something you get, like a gut, a long...

Does “Sleep Hacking” Work?

July 04 2018 - You can "hack" a lot of your health, diet, and lifestyle. You can cook the entire week's meals ahead of time, buy high-quality prepackaged foods and ready-to-cook meals, cover your nutritional bases w...

11 (Non-Dietary) Actions That Enhance Insulin Sensitivity

May 17 2018 - Insulin does a lot of important things for us. It pulls glucose from the blood and fritters it away into our cells to be burned for energy or stored as glycogen. It prevents hyperglycemic toxicity to ...

The Roots of Depression: How Much Does Modern Culture Have to Do With It?

April 17 2018 - I can't complain about my existence in modern culture. My life is great. I have a loving family. My kids are happy and successful. My wife is a friend and lover and confidante and partner. Business is...

8 Recommendations: Insights and Trends in Ancestral Health Documentaries

April 10 2018 - Most people learn about ancestral health through books and blogs, which makes sense—Primal folks tend to be big readers, and the complexity and depth and constant evolution of the knowledge almost ...

5 Suggestions for Becoming Less Civilized (and a Giveaway)

January 31 2018 - Civilization has given us great gifts. Infectious diseases rarely kill us anymore. We have hot running water that's safe to drink (usually). We can go down to the market and buy a thousand different f...

Dear Mark: Delving Further Into Dopamine

December 11 2017 - For today's edition of Dear Mark, I'm delving more deeply into dopamine. Readers asked some great questions and made some interest comments in the comment board of last week's post on dopamine, and to...

Ancestral Sleep Breathing

December 07 2017 - Today's article is a guest post by Dr. Mark Burhenne, the #1 bestselling author of The 8-Hour Sleep Paradox. As an authority on dental health, he is also on a mission to help shift the conversation a...

How Being Diagnosed with Type 1 Diabetes Improved My Entire Life!

June 09 2017 - It’s Friday, everyone! And that means another Primal Blueprint Real Life Story from a Mark's Daily Apple reader. If you have your own success story and would like to share it with me and the Mark’...

How I Ditched My Diabetes Medication and Found a New Life Plan

November 28 2014 - It’s Friday, everyone! And that means another Primal Blueprint Real Life Story from a Mark's Daily Apple reader. If you have your own success story and would like to share it with me and the Mark’...

Type 1 Diabetes No Match for Primal Lifestyle!

October 26 2012 - It’s Friday, everyone! And that means another Primal Blueprint Real Life Story from a Mark's Daily Apple reader. If you have your own success story and would like to share it with me and the Mark’...

Hypertension, Prediabetes, Metabolic Syndrome and 75 Pounds, All Gone in 6 Months

September 02 2011 - It’s Friday, everyone! And that means another Primal Blueprint Real Life Story from a Mark's Daily Apple reader. If you have your own success story and would like to share it with me and the Mark’...

Went Primal, Ditched the Diabetes Meds

August 26 2009 - I'm 56 years old and have been a type 2 diabetic since I was 32. When diagnosed, I went on the American Diabetic Association exchange diet, which is 50%+ carbohydrates. Believe it or not, the diet wor...

Diabetes Can Kiss My Butt

August 21 2009 - It?s Friday, everyone! And that means another Primal Blueprint Real Life Story from a Mark's Daily Apple reader. If you have your own success story and would like to share it with me and the Mark?s Da...

Primal Blueprint Success Story: Former Marathoner Beating Diabetes

June 20 2009 - Thanks to active forum member and fellow Primal Blueprinter, DiabetesCanKissMyButt. Let it be an inspiration to anyone who is living a similar story. Follow DiabetesCanKissMyButt as she journals he...

My Confidence Is Returning, and I’m Re-engaging in Life

June 29 2018 - It's Friday, everyone! And that means another Primal Blueprint Real Life Story from a Mark's Daily Apple reader. If you have your own success story and would like to share it with me and the Mark's Da...

The Entrepreneurial Spirit: Making an Impact As a Primal Health Coach

March 16 2018 - In a newsletter last week, I shared the impetus behind the creation of the Primal Health Coach Institute, the world’s first ancestral health coaching school, and teased you with the promise of mot...

Does a High-Fat Diet Cause Type 2 Diabetes?

August 24 2011 - This is a special guest post from Denise Minger (thank you, Denise!). When fear-inducing news headlines hit the papers (and airwaves and iPads...) -  High-Fat Diet Linked to Breast Cancer, Eating Who...

Did a Wrinkle in Human Evolution Predispose Us to Diabetes?

February 28 2011 - A new mice-with-an-engineered-human-genetic-deficiency study is out that promises to shed light on why humans are so darn diabetic and obese - and the cause is an evolutionary "mistake." A deficiency ...

Study Finds Low-Carb, High-Protein, High-Fat Diet Associated with Lowered Diabetes Risk

February 13 2008 - Chalk yet another one up for low-carb, high protein diets: A study in the current issue of the American Journal of Clinical Nutrition finds that a vegetable-based, low-carbohydrate diet can reduce the...

Lap Bands and Type 2 Diabetes

January 23 2008 - While caution is required in interpreting the longer-term benefits of surgery and weight loss, this study presents strong evidence to support the early consideration of surgically induced loss of weig...

The Definitive Guide to Insulin, Blood Sugar & Type 2 Diabetes (and you’ll understand it)

June 27 2007 - BITE ME, ADA We all know by now that type 2 diabetes is an epidemic. We’re seeing words like crisis and runaway all over the news and in the journals. Heart disease rates have been cut in half si...

Fasting versus Carb Restriction: Which Works Better for What Scenarios

June 13 2018 - 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 in...

5 Ways a Primal Health Coach Can Help You Overcome Sugar Addiction

March 13 2018 - Today's post is offered up by Dr. Dana Leigh Lyons, certified Primal Health Coach and author of Sugar Addiction: 5 Healing Steps.  Why, despite knowing the consequences, do we keep reaching for ...

Is Constant Ketosis Necessary – Or Even Desirable?

September 28 2017 - 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 si...

What Is the Vagus Nerve? (and How Does It Impact Health, Mood and Performance?)

February 16 2017 - In recent years, I’ve regularly vouched for the gut as our long-abused secondary brain. Given what most of us grew up learning in school, it can feel like a mammoth shift. Science and philosophy hav...

Should You Rethink Your Meal Timing for Weight Loss?

November 23 2016 - I've written about what to eat. I've written about what not to eat. I've even discussed the benefits of occasionally eating things you "shouldn't eat." I've written about skipping breakfast, eating a...

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