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Deconstructing Vitamin D

June 01 2010 - Before phototropic plants began bending toward sunlight, before jellyfish developed ocelli, the light-sensing organs that allow them to distinguish between up (sunlight) and down, before the bikini-cl...

Vitamin D and RDA for Children

May 31 2008 - It’s probably of little surprise that we take issue with some of the Recommended Daily Allowance values and how they’re often determined. Case in point: New research published in the Journal of Cl...

Vitamin D: Loose Ends

June 15 2010 - Okay, I’ll admit it. I may have spoken out of turn a couple week's ago when I tried to completely cover vitamin D in a mere three posts (Deconstructing Vitamin D, Vitamin D: Sun Exposure, Supplement...

Vitamin D: Confounding Factors

June 03 2010 - Yesterday I recommended 4000 IU of vitamin D each day as a good starting point for most people. Though, it’s difficult – nay, impossible – to provide a perfect, universal prescription for vitami...

Primal Challenge Point: Test Vitamin D Levels

February 08 2018 - "In the winter months, when the sun's rays are not intense enough to generate sufficient vitamin D production (this is the case for three to five months per year for locations in North American—you ...

Vitamin D: Sun Exposure, Supplementation and Doses

June 02 2010 - From the presence of vitamin D receptors in our cells and vitamin D factories in our epidermis, along with the central role vitamin D plays in calcium metabolism, immunity, and gene expression, it’s...

Dear Mark: Transdermal Magnesium and Vitamin D/B12 Products for a Vegetarian

November 14 2016 - For today's edition of Dear Mark, I'm answering two questions. The first one concerns transdermal magnesium. Does it work? Can magnesium actually permeate the skin and enter circulation? Probably. And...

Monday Musings: Vitamin D, Toxic Strawberries, New PUFAs Coming Soon

December 06 2010 - A quick look at Google Trends shows a clear, undeniable trend: that of regular folks armed with curiosity, questions, and Internet connections taking their health into their own hands and searching fo...

Dear Mark: Hempseed, Too Much Omega-3, and Vitamin D’s Halflife

August 15 2011 - It's a lovely summer morning here in Malibu. The cool sea breeze keeps the coming warmth at bay, for now, and makes me glad for the hot mug of coffee I'm clutching. I've still got a couple hours befor...

Dear Mark: Ornish Strikes Again, Vitamin D from Light Boxes, and Kimchi and Cancer

October 02 2012 - Ah, it's good to be back in the saddle again. The challenge was a lot of fun - don't get me wrong - but ultimately both you guys and I come here for the dispensation of musings and information and wri...

Deconstructing Vitamin D

June 01 2010 - Before phototropic plants began bending toward sunlight, before jellyfish developed ocelli, the light-sensing organs that allow them to distinguish between up (sunlight) and down, before the bikini-cl...

Vitamin D and RDA for Children

May 31 2008 - It’s probably of little surprise that we take issue with some of the Recommended Daily Allowance values and how they’re often determined. Case in point: New research published in the Journal of Cl...

Vitamin D: Loose Ends

June 15 2010 - Okay, I’ll admit it. I may have spoken out of turn a couple week's ago when I tried to completely cover vitamin D in a mere three posts (Deconstructing Vitamin D, Vitamin D: Sun Exposure, Supplement...

Vitamin D: Confounding Factors

June 03 2010 - Yesterday I recommended 4000 IU of vitamin D each day as a good starting point for most people. Though, it’s difficult – nay, impossible – to provide a perfect, universal prescription for vitami...

Vitamin D: Sun Exposure, Supplementation and Doses

June 02 2010 - From the presence of vitamin D receptors in our cells and vitamin D factories in our epidermis, along with the central role vitamin D plays in calcium metabolism, immunity, and gene expression, it’s...

Dear Mark: Transdermal Magnesium and Vitamin D/B12 Products for a Vegetarian

November 14 2016 - For today's edition of Dear Mark, I'm answering two questions. The first one concerns transdermal magnesium. Does it work? Can magnesium actually permeate the skin and enter circulation? Probably. And...

Dear Mark: Hempseed, Too Much Omega-3, and Vitamin D’s Halflife

August 15 2011 - It's a lovely summer morning here in Malibu. The cool sea breeze keeps the coming warmth at bay, for now, and makes me glad for the hot mug of coffee I'm clutching. I've still got a couple hours befor...

Monday Musings: Vitamin D, Toxic Strawberries, New PUFAs Coming Soon

December 06 2010 - A quick look at Google Trends shows a clear, undeniable trend: that of regular folks armed with curiosity, questions, and Internet connections taking their health into their own hands and searching fo...

Dear Mark: Ornish Strikes Again, Vitamin D from Light Boxes, and Kimchi and Cancer

October 02 2012 - Ah, it's good to be back in the saddle again. The challenge was a lot of fun - don't get me wrong - but ultimately both you guys and I come here for the dispensation of musings and information and wri...

Dear Mark: Vitamin D for Babes, Ingredient Bait and Switch, and Kettlebellin’ for Strength or Cardio?

June 29 2015 - For today's edition of Dear Mark, we've got a three-parter. First up is a controversial topic: vitamin D supplements for breastfeeding babies. Do they need it? Can they get enough through mother's mil...

Dear Mark: Vitamin D for Babes, Ingredient Bait and Switch, and Kettlebellin’ for Strength or Cardio?

June 29 2015 - For today's edition of Dear Mark, we've got a three-parter. First up is a controversial topic: vitamin D supplements for breastfeeding babies. Do they need it? Can they get enough through mother's mil...

Dear Mark: More of Your Challenge Questions Answered

January 23 2017 - For today's edition of Dear Mark, I'm answering 11 questions. I answer questions about nutrient deficiencies and tremors, breastfeeding on the 21-Day Primal Blueprint Challenge, cheating without appa...

8 Primal Rules for Building Better Bones

March 29 2016 - Strip away the skin, fascia, muscles, organs, blood vessels of a human and you're left with the bones: the foundation providing passive structural support. Many people accept that we can affect and ev...

10 Tips to Boost Your Serotonin

May 24 2017 - Serotonin is a major regulator of mood and depression risk. These are important, vital roles, to be sure. Your mood describes how you experience and interpret the world. If it's consistently bad, you'...

Can Getting Your DNA Tested Help You Optimize Your Diet and Training?

February 24 2015 - Last month, I received an unexpected email request from a man named Craig Pickering: “Send me your saliva.” Craig works for DNAFit, a genetic testing company using customers’ DNA results to o...

CrossFit Training: How Going Primal Will Enhance Recovery

August 10 2017 - Exercise is a major stressor. But it's a major acute stressor, rather than a chronic one. It hits us, then it's over, and we recover. When the next session rolls around, we're better/faster/stronger/...

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: Calcium Supplements, Goitrogenic Foods, High-MUFA Seed Oils, and Jogging

September 05 2011 - Today's edition of "Dear Mark" covers a variety of topics. We've got calcium supplementation - does it make sense and is it safe? Then, I briefly discuss cruciferous vegetables, which are said to have...

Dear Mark: Vitamin K2 and Microworkouts

August 13 2019 - For today's edition of Dear Mark, I'm answering questions about vitamin K2 and microworkouts. The last two posts on both topics garnered a number of good questions. What's the best dose of vitamin K2?...

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 ...

Dear Mark: More of Your Challenge Questions Answered

January 23 2017 - For today's edition of Dear Mark, I'm answering 11 questions. I answer questions about nutrient deficiencies and tremors, breastfeeding on the 21-Day Primal Blueprint Challenge, cheating without appa...

How to Leverage the Minimum Effective Dose in Your Primal Life

December 02 2014 - If you haven't heard about the minimum effective dose, a concept coined by Nautilus fitness creator Arthur Jones and popularized by lifestyle hacker Tim Ferriss in his book The Four Hour Body, here's ...

How to Ensure Your Final Years Are Good Ones

February 11 2014 - We talk about aging gracefully, but what does it mean? How does one age gracefully? To me, it means ensuring your final years are good ones. Basically, we want to avoid the "regular" maladies of agin...

Dairy Intolerance: What It Is and How to Determine If You Have It

December 24 2013 - I often say that "dairy is fine and even healthy if you tolerate it." But what exactly does that mean? How do you know if it's "not okay"? You could be reacting poorly to the lactose, the casein, the ...

Winter Blues: How Cold, Dark Days Can Take a Mental Toll

December 10 2015 - After last week’s look at what winter does in terms of physical symptoms, I’d be lax to not address the obvious elephant in the living room: mental health in the colder, darker season. I’ll admi...

9 Factors That Influence Testosterone Levels

September 06 2017 - In the last several weeks testosterone has come up on a pretty regular basis. I've written about it before, of course, but there's something about the novel elements (e.g. solar irradiation for certa...

Blindspots Even Informed Paleo Enthusiasts Often Have

November 11 2015 - You read Mark's Daily Apple every day. Paleo health, nutrition, and fitness folks populate your Twitter feed almost exclusively. You've got several PubMed alerts set up, helping you stay on top of the...

Are We Pre-Programmed to Be Happy?

July 26 2012 - I think we can all agree that a basic goal in life is the attainment of happiness, that mind state characterized by positive and pleasant thoughts and emotions. But how do we become happy? By definiti...

How to Deal with Common Primal Stumbling Blocks

September 20 2011 - A 30-day Primal Blueprint Challenge wouldn't be complete without you facing some actual challenges. Yesterday, because we're all in this together, I asked you to share your struggles with everyone in ...

How to Find Your Personal Tipping Point

November 15 2011 - Almost all of our Friday success stories have one thing in common (besides the whole Primal thing): they finally "decide to do something about" their health. Something changes. Their health, their sta...

Deconstructing Vitamin D

June 01 2010 - Before phototropic plants began bending toward sunlight, before jellyfish developed ocelli, the light-sensing organs that allow them to distinguish between up (sunlight) and down, before the bikini-cl...

Vitamin D and RDA for Children

May 31 2008 - It’s probably of little surprise that we take issue with some of the Recommended Daily Allowance values and how they’re often determined. Case in point: New research published in the Journal of Cl...

Vitamin D: Loose Ends

June 15 2010 - Okay, I’ll admit it. I may have spoken out of turn a couple week's ago when I tried to completely cover vitamin D in a mere three posts (Deconstructing Vitamin D, Vitamin D: Sun Exposure, Supplement...

Vitamin D: Confounding Factors

June 03 2010 - Yesterday I recommended 4000 IU of vitamin D each day as a good starting point for most people. Though, it’s difficult – nay, impossible – to provide a perfect, universal prescription for vitami...

Primal Challenge Point: Test Vitamin D Levels

February 08 2018 - "In the winter months, when the sun's rays are not intense enough to generate sufficient vitamin D production (this is the case for three to five months per year for locations in North American—you ...

Vitamin D: Sun Exposure, Supplementation and Doses

June 02 2010 - From the presence of vitamin D receptors in our cells and vitamin D factories in our epidermis, along with the central role vitamin D plays in calcium metabolism, immunity, and gene expression, it’s...

Monday Musings: Vitamin D, Toxic Strawberries, New PUFAs Coming Soon

December 06 2010 - A quick look at Google Trends shows a clear, undeniable trend: that of regular folks armed with curiosity, questions, and Internet connections taking their health into their own hands and searching fo...

Dear Mark: Ornish Strikes Again, Vitamin D from Light Boxes, and Kimchi and Cancer

October 02 2012 - Ah, it's good to be back in the saddle again. The challenge was a lot of fun - don't get me wrong - but ultimately both you guys and I come here for the dispensation of musings and information and wri...

Dear Mark: Vitamin D for Babes, Ingredient Bait and Switch, and Kettlebellin’ for Strength or Cardio?

June 29 2015 - For today's edition of Dear Mark, we've got a three-parter. First up is a controversial topic: vitamin D supplements for breastfeeding babies. Do they need it? Can they get enough through mother's mil...

Why Kids Need the Sun

July 01 2014 - This is a guest post from Michelle Fitzpatrick of Happy Paleo Kids. Michelle has worked with special needs children and their families for over 13 years to promote development and mental health. She a...

Primal Egg Coffee: The Best Part of Waking Up?

July 24 2013 - Bulletproof coffee has taken the paleo world by storm. Not me, though. Don't get me wrong. I'm all for people dropping grass-fed butter and coconut/MCT oil into their high-quality coffee, blending ...

The Perfect Primal Omelet

September 25 2010 - Breakfast, lunch, dinner, snack time. Hard boiled, scrambled, poached, fried. We’ll take eggs any time of day, any way you want to cook ‘em. But if we had our choice, the omelet just might be our ...

The Wonderful, Pungent World of Sauerkraut

March 24 2009 - Although fermented cabbage has been around in some form or another since ancient times – Roman author Pliny the Elder wrote of the stuff in the first century A.D. – modern methods for making sauer...

Tuna Mango Salad with Citrus Poppy Seed Dressing

September 05 2015 - This is a guest post from Kendra Cardoza, author of the blog paleopaparazzi.com. Hey hey! Kendra here. You may know me from my blog paleopaprazzi.com or my IG account where I post #KendrasSuperSal...

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...

Enjoy a Collagen Peptides Green Smoothie—And Win a Vitamix!

March 13 2018 - We're serving up an early midweek recipe that will have you thinking spring—or St. Patty's Day—along with a giveaway you won't want to miss.... Fresh basil gives this refreshingly tart and trop...

Coconut Fish Soup with Red Palm Oil

August 01 2015 - This gorgeous fish soup is quick and easy to make, rich in flavor, and filled with healthy fats. It’s also really delicious; a weeknight meal you’ll want to make over and over again But the real r...

Celeriac Noodles with Parsley Pesto

February 15 2014 - There are several types of vegetables that can be used to mimic noodles (spaghetti squash, zucchini) but none do it as well as celeriac. Peeled strands of this rugged root will cook to al dente in les...

Simple Celery and Almond Salad

August 16 2009 - Celery has never really enjoyed the starring role in dishes that other vegetables do. It’s not that celery isn’t worthy. The vegetable is inexpensive, stays fresh for weeks, has a mild and pleasin...

I’m Going Into My 40th Year Feeling Healthier Than Ever!

August 30 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?s Da...

The Strength to Recover: Wendy’s Powerful Primal Story

August 28 2009 - Where to begin? My earliest memories of food and health started, of course, with family. I remember that my mother was never happy with her weight and was always on some sort of diet. As a little girl...

One Year to Become Truly Healthy

January 03 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’...

My Family’s Primal Living Achievements Empowered Me

August 24 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...

Finally Getting Lean and Feeling Excellent!

April 21 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’...

Drug Free for the First Time in Five Years

November 05 2010 - During this year's 30-Day Challenge I put a call out for Primal Blueprint Success Stories. Dozens upon dozens were sent in. If you're looking for a bit of insight into how others have transitioned to ...

Keto Was a New Way Of Life

March 04 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...

I Can Only Show You the Door

April 22 2011 - It’s Friday, everyone! And that means another Primal Blueprint success story. Many thanks to Ronald for sharing how he stepped through the threshold and lost 70 pounds in the process. If you h...

I Feel Better Than I Ever Did In My Life

August 03 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...

Paleo Thyroid Solution Success Story: Cara Haun

September 16 2016 - It’s Friday, everyone! And that means another Primal Blueprint Real Life Story from a Mark's Daily Apple reader. This week's featured testimonial is one of many success stories spurred by Primal Blu...

Dear Mark: More of Your Challenge Questions Answered

January 23 2017 - For today's edition of Dear Mark, I'm answering 11 questions. I answer questions about nutrient deficiencies and tremors, breastfeeding on the 21-Day Primal Blueprint Challenge, cheating without appa...

Dear Mark: Two Weeks Off Primal, Pili Nuts, Fasting and Micronutrient Deficiencies

August 11 2014 - In today's edition of Dear Mark, I cover three questions from readers. First is from Richard, who's taking his father back to the old country - Italy, to be exact - for a two week vacation to visit th...

Dear Mark: Osteoporosis, Body Fat Gain on Caloric Deficit, and Stalling on Primal

April 27 2015 - For today's edition of Dear Mark, we've got a three-parter. First, I try to help out Karson, a guy who's trying to convince his osteoporotic, sun-starved mother to try a few lifestyle interventions th...

Dear Mark: Sun Aging Skin, Veggies as Carbs, and What Breaks a Fast

August 31 2015 - For today's edition of Dear Mark, I'm answering three questions. First up comes from Carlos, who is worried about the effect of sun exposure on skin aging. Is the type of sun exposure I recommend go...

How to Ensure Your Final Years Are Good Ones

February 11 2014 - We talk about aging gracefully, but what does it mean? How does one age gracefully? To me, it means ensuring your final years are good ones. Basically, we want to avoid the "regular" maladies of agin...

Dear Mark: Your Challenge Questions Answered

January 16 2017 - Last week, you guys asked me a ton of questions as part of a contest. Today, I'm going to answer an initial batch. (If you don't see yours, check back on Mondays to come when I'll take up others.) Fir...

Dear Mark: Sun Beds, Skipping Breakfast, Cooking with Essential Oils, and Glycerol

December 19 2011 - It's Monday, which means it's time for another round of Dear Mark questions and answers. This week I'm answering four reader inquiries. First, I discuss the suitability of tanning beds, and try to giv...

Dear Mark: Salmon Pouches, Ray Peat, and Our Inherent Desire for Crispy Food

October 08 2013 - Ah, it's good to be back with a regular old Dear Mark. Today we're discussing the nutritional value of canned salmon, and whether the canning process negates some or much of the impressive nutrient pr...

Weight Gained During Exercise Hiatus Tough to Lose, Study Finds

February 06 2008 - Yesterday, Mark, in the comment section of Dear Mark: Chronic Cardio, said "It all comes down to this: fat loss depends 80% on what and how you eat." As part of the Primal Blueprint the most importan...

12 Surprising Things You Can Do With Avocado Oil

April 13 2016 - If it were up to me, I'd have a steady supply of perfect, ripe avocados on hand. They'd have no blemishes, no bruising, no weird soft spots, no stringy veins running through. Every avocado would be ri...

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