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 Mar...

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...

100 Pounds Lost, Type II Diabetes Gone, and High Blood Pressure Normalized After Going Primal

May 27, 2016 - 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 Ma...

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 Mar...

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...

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...

Need to Know Factors for Bone Health

July 12, 2017 - At the heart of every building is its framework. That latticework of timber, concrete or steel is what holds the entire structure up. Without it, there’d be no building at all. I think of that phras...

Dear Mark: CrossFit and Carb Questions

July 10, 2017 - For today's edition of Dear Mark, I'm answering questions from the comment section of last Thursday's post on CrossFit, Primal, and carbs. First, I use a comment from Dave to expand on the idea of ea...

3 Ways to Regulate Insulin That Have Nothing to Do with Food

June 06, 2017 - Today's guest post is served by a good friend of Mark's Daily Apple, Dr. Sarah Ballantyne, PhD, or as you might know her—The Paleo Mom.   Regulating blood sugar levels is a key feature of any he...

How to Exercise with An Autoimmune Condition

March 23, 2017 - Autoimmune diseases really throw the body for a loop. You're attacking your own tissues. Your inflammation is sky high. What's usually good for you—like boosting the immune system—can make it wors...

8 Alternative Therapies Worth Considering

February 15, 2017 - Here at Mark's Daily Apple, I avoid writing off anything without first investigating it. I keep one foot in the "alternative" health world and one in the "conventional" realm, making sure to maintain ...

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: 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...

ACEs and Primal Health

June 08, 2017 - It’s fair to say that I gravitate towards tangible, actionable subject matter when it comes to improving my own and others’ health. Things like nutrition, fitness, sleep, hormonal responses, and s...

5 Unconventional Ways to Extend Your Life

April 26, 2017 - I've written about extending your life by slowing down the apparent passage of time. I've written about some interesting predictors—but not necessarily causes—of longevity, and the common characte...

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...

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 ...

Why Aren’t We Talking About the Cognitive Health Crisis?

November 29, 2017 - If you look at the latest stats, you might assume there's no cognitive health crisis. The overall number of dementia cases are going up, but that's because the aging population is growing. Older fo...

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...

The Definitive Guide to Children’s Nutrition

July 19, 2017 - Feeding infants is quite simple. There's a ton riding on you getting it right, of course—a developing immune system, the fact that the kid's growing an inch a week, a permeable blood-brain barrier,...

Hair Loss: Looking beyond Genetics

July 04, 2017 - Conventional wisdom teaches us to accept our fate when it comes to hair loss. “Runs in the family,” we’re often told—and sometimes it does (but that’s usually not the full story). “It’s ...

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 Mar...

100 Pounds Lost, Type II Diabetes Gone, and High Blood Pressure Normalized After Going Primal

May 27, 2016 - 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 Ma...

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 Mar...

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 Mar...

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 Mar...

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?...

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...

I’m Taking Patients Off More Medications Than I’m Prescribing

January 19, 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'...

Sweet 60: I’m More Fit Than Ever!

January 05, 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'...

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 we...

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...

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...

Dear Mark: IGF-1 and Fasting, Ex-CrossFitter Fitness Maintenance, and Barre Training

September 26, 2016 - 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 horm...

The Genetics of Obesity: Are You Destined to Be Fat?

August 30, 2016 - 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...

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