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...

Tell Me More
Stay Connected

Category: Diet & Nutrition

Ultimate Guide to Non-Dairy Milks

Some people just don’t do milk.

There are many reasons why. Maybe you have a dairy intolerance. Maybe you don’t like the way cow’s milk tastes. Or maybe you think cow milk is unhealthy.

I won’t contest the reasons why. That’s another topic for another post, and I’ve already covered the most common anti-dairy arguments. If you want to read about my stance on the healthfulness (or lack thereof) of dairy, read what I’ve written about raw milk, cheese, yogurt, and dairy in general. If you want to learn how to identify dairy intolerance, read this.

But the fact is, lots of people either need or want a milk alternative. Water is great to drink, but it’s not the right smoothie substrate, and it can’t replace milk in recipes or coffee drinks. You need something vaguely white and thick enough to pass as milk.

Normally in a post like this, I’d cover all the different varieties and what sets each apart—their strengths and weaknesses, their nutrient profiles, their unhealthy ingredients. And I’ll certainly do that today, but first there’s good news and bad news.

Read More

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

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 hormone. What about fasted exercise—does that have an even stronger effect? And what about continuing to fast after your fasted workout? Then, I discuss the inevitability (or not) of wear and tear on the arteries from blood flow-induced shear stress. Is shear stress “bad,” or do certain factors make it worse?

Let’s dig in.

Read More

Dear Mark: How Does LDL Even Penetrate the Arteries, New Zealand Farmed Salmon, Elevated Ferritin

For today’s edition of Dear Mark, I’m answering three questions. First, can LDL actually infiltrate the arteries, or is there more to the story? Malcolm Kendrick says there’s more to the story, so I dig into some literature to see if they corroborate his position. Second, is New Zealand farmed salmon good to eat? And finally, what should you do about elevated ferritin levels—and why else might they be elevated if not because of your iron?

Let’s go:

Read More

Is Keto Bad For Cholesterol?

We’ve all heard the story. Maybe we’ve even been the protagonist.

Person goes full keto. They lose a bunch of weight, normalize their pre-diabetic glucose numbers, resolve their high blood pressure readings, have more energy, feel great, and have nothing but high praise for the new way of eating.

Except for one thing, everything seems perfect: their cholesterol is sky-high. It throws a wrench into the whole operation, installs a raincloud over the procession, spoils their confidence.

“Could I be killing myself?”

“Are my health improvements just a mirage?”

In other words, are the apparent benefits of keto merely superficial if your cholesterol skyrockets?

Read More

The First 90 Days Have Given Me Confidence That I Can Do This—and More!

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 Daily Apple community please contact me here. I’ll continue to publish these each Monday as long as they keep coming in. Thank you for reading!

When did I first see it? It was in November 2017. I stepped on my scale and proceeded to log my information into my fitness tracker and there it was staring back at me. The tracker already knows my age and height and it spit out a calculation that never really caught my attention before. Under the heading for BMI (Body Mass Index) the word Overweight was highlighted with a color meant to get my attention. It did.

I’ve never had what you would call a weight problem. In fact at first glance most people would call me tall (at 6’2″) and skinny. But with a BMI at 25.8% I now was in the “overweight” bucket. I realize that a BMI calculation that is done this way doesn’t factor in a lot of things and someone that is muscular will have a higher BMI and that shouldn’t be a good indicator of a healthy weight. But that’s not me, I don’t have a muscular build so that excuse doesn’t hold water. The fact was that I let my weight and body fat creep up, I had let myself go. Most importantly, when I looked at my naked self in the mirror I wasn’t happy with what was there and wanted to change.

Read More

Can I Eat Fruit On a Keto Diet?

Question: “Can I eat fruit on a ketogenic diet?”

Answer: “Sure, if you want!”

I’m kidding, of course. I know why people ask this question. It’s because in the keto world fruit is a confusing, often contentious topic. You’ll sometimes see keto folks draw a hard line in the sand, saying that all fruits, or sometimes specific fruits, are “not allowed” on a ketogenic diet. I’ve written before about why I feel it’s inappropriate to label foods as “keto” or “not keto.” People need to consider their own goals, health, activity level, and food preferences when formulating their eating strategies.

Read More

Join Over 300,000 Subscribers!

Signup and get:

Primal Blueprint Fitness plus 7 other eBooks
7-Day Course on Primal Fundamentals
Special Offers and More!