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Dear Mark: Saunas and Finnish Longevity, Saunas and Sperm, What About Ambient Temperature?

September 03 2018 - For today's edition of Dear Mark, I'm answering three questions from readers. There was some good feedback after last week's sauna post, and I want to address a few of the comments. First, does the fa...

Dear Mark: What Does High HDL Mean? and Is Exercise Good or Useless for Weight Loss?

December 26 2016 - Today's edition of Dear Mark is a relatively brief two-parter, but it's a good one. First, I answer a question about HDL. Is higher good? Is higher (sometimes) bad? How does a person make sense of all...

Dear Mark: Oxidative Priority Follow-up

October 30 2018 - Last week, Craig Emmerich graced us with a great post on the oxidative priority of various dietary fuel sources, namely fats, carbohydrates, and protein. If you haven't had the chance to read throu...

Dear Mark: The PURE Study

September 04 2017 - For today's edition of Dear Mark, I'm addressing just one question. It's not even a question, really. It's a study. In the comments to a post from last week, Pedro dropped a line about some very cool ...

Dear Mark: Vibration Training, Missing Meniscus, and Neuromuscular Electrical Stimulation

December 05 2016 - For today's edition of Dear Mark, I'm answering three questions. First, do those whole body vibration training plates provide the kind of instability that I suggest promotes good cartilage function? ...

Dear Mark: Grok’s Terrible Genes; Fasting, Starvation, and Metabolism

August 28 2017 - For today's edition of Dear Mark, I'm answering two questions from readers. The first one concerns a study I linked to in this week's Weekend Link Love. It appears to suggest that ancient humans had w...

Dear Mark: Coronavirus Questions

March 18 2020 - Okay, so this situation is upon us. There's no denying that all anyone can focus on is the coronavirus. There are several different names used for it, but I'll use coronavirus and COVID-19 for today's...

Dear Mark: Vitamin B and Lung Cancer, Folate Stability in Liver, and Less DNA Damage on No Produce

March 19 2018 - For today's edition of Dear Mark, I'm answering three questions from readers. First, what do I make of the recent study showing a link between lung cancer in men and supplementation with vitamin B6 an...

Dear Mark: Happy New Year, and Flight Crews, Radiation, and Cancer

January 01 2018 - Before I get to the questions, Happy New Year, everyone! We have some exciting announcements and daily posts coming throughout January designed to help you successfully tackle this coming year (and a...

Dear Mark: Right Leg Balance Issues, Plastic Wrap Flattened Meat, Vaporizing Cannabis

December 19 2016 - For today's edition of Dear Mark, I'm answering several rapid fire questions. I'll be concise and clear. I'll be quick. First, what can someone do if they can balance on the left leg but not the right...

Dear Mark: Oxidative Priority Follow-up

October 30 2018 - Last week, Craig Emmerich graced us with a great post on the oxidative priority of various dietary fuel sources, namely fats, carbohydrates, and protein. If you haven't had the chance to read throu...

Dear Mark: Grok’s Terrible Genes; Fasting, Starvation, and Metabolism

August 28 2017 - For today's edition of Dear Mark, I'm answering two questions from readers. The first one concerns a study I linked to in this week's Weekend Link Love. It appears to suggest that ancient humans had w...

Dear Mark: Vitamin B and Lung Cancer, Folate Stability in Liver, and Less DNA Damage on No Produce

March 19 2018 - For today's edition of Dear Mark, I'm answering three questions from readers. First, what do I make of the recent study showing a link between lung cancer in men and supplementation with vitamin B6 an...

Dear Mark: Obesity as “First World Problem”?

August 21 2017 - For today's edition of Dear Mark, I'm not so much answering a direct question as I am riffing on an offhand comment. In the comments from last week's post on weight loss culture, someone mentioned obe...

Dear Mark: Coffee Questions

April 30 2018 - For today's edition of Dear Mark, I'm answering questions from last week's post on coffee and fasting. First, is cortisol a bad guy all the time? Next, what about non-dairy powdered creamers? Good, ba...

Dear Mark: Raw Mushrooms, Tom Brady’s Diet, and Beta-Glucan Alternatives

April 03 2017 - For today's edition of Dear Mark, I'm answering three questions. First, are raw mushrooms safe to eat? Are there toxins? Are there any other issues to consider? Second, what's the deal with Tom Brady'...

Dear Mark: Hydroponic vs. Regular Vegetables; Lowering Blood Pressure Without Meds

February 13 2017 - For today's edition of Dear Mark, I'm answering two questions. First up, do the nutrient contents of hydroponic produce differ from soil-grown produce? If so, in what way? Then I give a few (somehwat ...

Dear Mark: Really High HDL, More Heart Disease; Low-Salt For Grandpa?

September 11 2017 - For today's edition of Dear Mark, I'm answering two questions from readers. They were excellent this week. The first one comes from Sarah, who's a bit puzzled by the recent paper in which people with ...

Dear Mark: More On Women and Fasting

May 21 2018 - Last week, I updated an older post on women and intermittent fasting. For today's edition of Dear Mark, I'll be answering some of the comments and questions from that post. First, should a lean woman ...

Dear Mark: Peanut Edition

March 05 2018 - For today's edition of Dear Mark, I'm answering a bunch of questions from last week's post about peanuts. You guys had quite the reaction to it, and today I'm digging into some of your questions and c...

Dear Mark: Right Leg Balance Issues, Plastic Wrap Flattened Meat, Vaporizing Cannabis

December 19 2016 - For today's edition of Dear Mark, I'm answering several rapid fire questions. I'll be concise and clear. I'll be quick. First, what can someone do if they can balance on the left leg but not the right...

Dear Mark: Ketosis and HIIT, Keto After Menopause, Inuit and Ketosis?

June 26 2017 - For today's edition of Dear Mark, I'm answering a few questions from you folks. First, can a person maintain their high intensity interval training while starting a ketogenic diet? Is there anything y...

Dear Mark: Ketones for Overtraining?

January 06 2020 - For today's edition of Dear Mark, I'm answering a question about taking ketones for overtraining from a reader. Hi Mark, I just saw this article the other day and I'm wondering what you think of i...

Dear Mark: Is There No Upper Limit to Endurance Training?

October 22 2018 - Yesterday, I linked to a study showing that the beneficial effects of high levels of cardiorespiratory fitness—the kind you build with cardio/endurance training, HIIT, and sprints—have no upper li...

Dear Mark: Isometrics and Yoga for Seniors, Plus How Aging Affects Recovery

March 13 2017 - For today's edition of Dear Mark, I'm answering a few questions about exercising for seniors. Last week's post drew a lot of comments, and a few questions about how seniors should train. First, I'll e...

Dear Mark: Does Physical Activity Affect Obesity Risk?

September 17 2018 - For today's edition of Dear Mark, I'm answering one question from a reader. It concerns the effects of physical activity on obesity. This is an evergreen topic, a constant in the queries I receive....

Dear Mark: Going Carnivore with Just Seafood, Protein Right after Fasted Workout?

March 10 2020 - For today's edition of Dear Mark, I'm answering a pair of questions from readers. The first one comes from the comment section of the excerpt from Paul Saladino's new book: Can a seafood-only carnivor...

Dear Mark: Keto Reset Eating Plan, Better Weight Scales, PB Fitness Carb Requirements, and the Best Fish Sauce

July 31 2017 - For today's edition of Dear Mark, I'm answering/addressing four questions/comments. First, will my new Keto Reset book provide detailed meal plans or vague recommendations? Second, is there a better w...

Dear Mark: Steak Satiety vs Ground Beef Satiety; Maca and Cacao During Fasts; Nut Butters, and Post-work Workouts

February 06 2017 - For today's edition of Dear Mark, I'm answering four questions from readers. First, why might a pound of ground beef induce less satiation than a pound of steak? Second, can you take maca root and cac...

Dear Mark: Why No Soy in PK Teriyaki, What Slackline to Buy, and Type 2 Diabetics and Keto

July 04 2019 - For today's edition of Dear Mark, I'm answering three questions. First, why did I leave out soy sauce from the Primal Kitchen® No Soy Teriyaki Sauce? Second, what slackline do I recommend beginner...

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...

Dear Mark: Family Dinner

January 21 2008 - Dear Mark, I come from a big family that loves food. It's a cultural thing, in part, but it's also just the way we've always celebrated together. In the last couple years, I've really gotten myself...

Dear Mark: Too Much Serotonin and Broccoli Sprouts

June 05 2017 - For today's edition of Dear Mark, I'm answering two questions from readers. The first is more of a comment, but it brought up a few questions for me to address. Is "more serotonin" always a good thing...

Dear Mark: Fasting Followup

February 27 2017 - For today's edition of Dear Mark, I'm answering questions from the comment section of last week's fasting post. You guys brought up some great points, and I'll be addressing some of them. First up, do...

Dear Mark: The Semmelweis Reflex

March 08 2010 - Sometimes the path of Primal transformation includes a series of upendings. It’s in part a process of uprooting daily habits that don’t serve your well-being. Maybe it’s a re-envisioning of your...

Dear Mark: Low on Willpower

October 05 2009 - Dear Mark, I’ve been following the blog for a couple of months now and have been trying to get into a regular exercise routine like you describe. Unfortunately, I get some fitness momentum going...

Dear Mark: Chronic Cardio

February 04 2008 - Dear Mark, I'm still having a hard time understanding what "chronic high level training" is, exactly. How much is too much? Is there a heart rate zone you guys can give me? A time limit? Am I over...

Dear Mark: Diet to Get Lean, Exercise to Get Healthy?

September 24 2018 - For today's edition of Dear Mark, I'll be discussing the role of exercise alone in weight and fat loss. If it seems like I've been harping on this same topic for a couple weeks now, it's only because ...

Dear Mark: Phones in Bedrooms, Antidepressants, Pastured Egg Omega-6 Content

April 23 2018 - For today's edition of Dear Mark, I'm answering three questions from readers. I've come down hard against phones in bedrooms in the past. Is there a "good way" to use your phone in the bedroom? Reader...

Dear Mark: When Nature is Stressful and How to Use Fish Sauce

July 24 2017 - For today's edition of Dear Mark, I'm answering a couple questions from readers. First, is nature always relaxing and blissful? Or are there instances where being in nature is far more stressful than ...

Dear Mark: Vibration Training, Missing Meniscus, and Neuromuscular Electrical Stimulation

December 05 2016 - For today's edition of Dear Mark, I'm answering three questions. First, do those whole body vibration training plates provide the kind of instability that I suggest promotes good cartilage function? ...

Dear Mark: Happy New Year, and Flight Crews, Radiation, and Cancer

January 01 2018 - Before I get to the questions, Happy New Year, everyone! We have some exciting announcements and daily posts coming throughout January designed to help you successfully tackle this coming year (and a...

Dear Mark: TRT Edition

September 25 2017 - Last week's post on testosterone replacement therapy generated a lot of comments and questions, so for today's edition of Dear Mark I'll be answering some of them. From the prostate and heart disea...

Dear Mark: Pregnenolone

September 10 2018 - In today's edition of Dear Mark, I'm talking about pregnenolone, the "master hormone." Most of the hormones we talk about, like testosterone, estrogen, and cortisol, all have pregnenolone as their pre...

Dear Mark: High T, More Wives? Plus Testosterone for Women and the Best Primal Roux

May 29 2017 - For today's edition of Dear Mark, I'm answering three questions from readers. First, I respond to a reader wondering which direction the arrow of casuality points in the married Swahili man/testoster...

Dear Mark: Roundup Safety and Polyamory to Monogamy

May 22 2017 - For today's edition of Dear Mark, I'm covering two entirely different topics. The first is a fairly familiar topic to readers of this blog—whether a popular pesticide is actually dangerous or not. ...

Dear Mark: Gender and Retirement Mortality, Muscle-Sparing Keto, Freezing Keto Recipes, Net Carbs, and Carb Timing

November 06 2017 - For today's edition of Dear Mark, I'm answering 5 questions from readers. First, are there differential mortality effects of mortality on men and women? What role do social networks play? Second, is k...

Dear Mark: HDL, Probiotics for Acne, and Artificial Sweeteneners and Weight Gain

July 03 2017 - For today's edition of Dear Mark, I'm answering three questions. First, is HDL all it's cracked up to be? Is HDL always good? Is it the savior? Or is the story a bit more complicated? Next, what are s...

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...

Dear Mark: Family Dinner

January 21 2008 - Dear Mark, I come from a big family that loves food. It's a cultural thing, in part, but it's also just the way we've always celebrated together. In the last couple years, I've really gotten myself...

Primal and Keto Collagen Recipes

February 25 2020 - Mark’s said it before: He advocates for collagen to become the fourth macronutrient. Collagen supports collagen-based structures in the body, such as fascia, ligaments, tendons, cartilage, skin, nai...

Make it a Primal Thanksgiving!

November 24 2008 - Given it’s Thanksgiving week, we thought we’d devote Monday to the big menu. (Check back tomorrow for this week’s Dear Mark!) Yup, we’re taking on the mother of all carb-laden holidays, and we...

The Many Uses of Almond Meal

December 22 2008 - As you might recall from our pie and cracker recipes, and Son of Grok's pizza recipe we like to use almond flour or almond meal as a foundation for Primal baking. It has a similar consistency to tradi...

Smart Fuel: Mahi Mahi

May 08 2008 - For years, those in the know – and we include ourselves in this category – have been harping on about the multiple health benefits associated with eating fish. But we haven't written too much abou...

10 Primal Meals in 15 Minutes or Less

September 09 2008 - Many people think that cooking healthy meals has to be a difficult and time-consuming task. In fact, nothing could be further from the truth. (And even if it was true, isn't the extra effort worth it?...

Mark’s Cold Brew Coffee

May 28 2019 - Welcome to summer, everyone. (I think most people agree it starts after Memorial Day, right?) One of the things I've always loved about summer is cold brew coffee. As most of you know, I'll take coffe...

Mark’s Big-Ass Keto Salad

April 09 2017 - For years now, all those who know me (including readers of the blog) have heard me talk about my daily "big-ass salad." It's been my lunch of choice for a couple of decades at least, and I don't see t...

Choose Your Own Salad Adventure

February 06 2008 - We here at Mark's Daily Apple love salads. And lets face it, what's not to love? Not only is it healthy, but there is so much opportunity to change it up. You could literally go years without repeatin...

Dark Chocolate Macadamia Bark Sprinkled with Sea Salt

December 10 2011 - ‘Tis the season of candy and sugary baked goods showing up everywhere you go. Plates of cookies, tins of caramel corn, strings of candy canes and leaden logs of fruitcake – why these things symbol...

Eat This Today, Feel Better Tomorrow

February 27 2008 - We're mixing things up here a bit at MDA and wanted to offer up ideas for (primal) healthy meal plans. What does it mean to do MDA fare, sun up to sun down? Though the choices are mind-boggling, here'...

I Enjoy My Life So Much More

December 02 2019 - It's Monday, 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 Unconquerable Dave

February 04 2011 - Dave first emailed me about a year ago. He had just bought the Primal Blueprint Cookbook and was seeing some real results. Occasionally I'll get an update from him. One can really get a sense of Dave'...

I Cannot Imagine Living Any Other Way

June 01 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’...

1 Couple, 4 Months, 90 Pounds and Newfound Health

November 27 2010 - These Primal Blueprint success stories seem to have become a regular feature on Mark's Daily Apple in recent weeks. I love to hear from readers and I'm more than happy to publish these stories as long...

Mark’s Daily Apple Readers “Go Primal”

May 10 2010 - Who's ready for a little Monday morning motivation? Mark's Daily Apple readers are putting the principles of The Primal Blueprint to work and turning their lives around as a result. If the Grok tattoo...

The Pain and Stiffness Disappeared and Has Never Returned

April 05 2013 - 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’...

Flab to Fab in 7 Easy Months

January 04 2013 - 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’...

Ignoring the Naysayers

December 30 2010 - Camzin is from South Africa. When she moved to America, the Standard American Diet greeted her with open arms. Today I get to share with you her journey to overcome flawed conventional wisdom, the wor...

I Wish I Could Shout It from the Rooftops!

April 06 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’...

I Am Now the “Healthy Guy”

June 14 2013 - 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: What Does High HDL Mean? and Is Exercise Good or Useless for Weight Loss?

December 26 2016 - Today's edition of Dear Mark is a relatively brief two-parter, but it's a good one. First, I answer a question about HDL. Is higher good? Is higher (sometimes) bad? How does a person make sense of all...

Dear Mark: Does Physical Activity Affect Obesity Risk?

September 17 2018 - For today's edition of Dear Mark, I'm answering one question from a reader. It concerns the effects of physical activity on obesity. This is an evergreen topic, a constant in the queries I receive....

Dear Mark: Sugar Cravings

January 28 2008 - Dear Mark, I do pretty well in the fitness department, love my veggies and get plenty of protein. My problem is that I can't seem to shake my sugar cravings. Suggestions? I get some version o...

Dear Mark: Fasting, Training, and Growth Hormone; Wear and Tear on the Arteries

February 26 2019 - For today's edition of Dear Mark, I'm answering a couple of questions from the comment sections of the last couple weeks. First, it's been established that fasting and exercise both raise growth hormo...

Dear Mark: Glycogen

October 20 2008 - Dear Mark, I'm trying to understand how glucose that's created by proteins and fats is used and stored. Is that ~200g of glycogen stored in the muscles to be used for exercise, or is it stored in ...

Dear Mark: CLA Supplements

May 09 2011 - Today's question comes from Ola and regards CLA, or conjugated linoleic acid. What is CLA? CLA is the "good" trans-fat that occurs naturally in meat and dairy, especially from grass-fed animals. In th...

Dear Mark: Low on Willpower

October 05 2009 - Dear Mark, I’ve been following the blog for a couple of months now and have been trying to get into a regular exercise routine like you describe. Unfortunately, I get some fitness momentum going...

Dear Mark: Does Chicken Cause Cancer, Should You Neuter, Dog Collagen, and Skipping Dinner

September 10 2019 - For today's edition of Dear Mark, I'm answering a few questions. First came in from an email and regards a new study showing a link between chicken eating and several types of cancers (melanoma, prost...

Dear Mark: Diet to Get Lean, Exercise to Get Healthy?

September 24 2018 - For today's edition of Dear Mark, I'll be discussing the role of exercise alone in weight and fat loss. If it seems like I've been harping on this same topic for a couple weeks now, it's only because ...

Dear Mark: Broth, Fasting, Coffee, and Metformin (and More)

December 18 2018 - For today's edition of Dear Mark, I'm answering a bunch of questions from comment sections. First, did I get AMPK and mTOR mixed up in a recent post? Yes. Second, I give a warning for those who wish t...

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