CrossFit has been a full-on addiction for me. My lifestyle is so much better because of it. I eat better, feel better and look better. Every day I look forward to that hour or two after work where I can just hang out with my friends and let off some steam in a workout. The best part of this is that I get to have friendly competition with others, and most importantly myself.

In making the case for meat, Cordain presents anecdotal evidence of Eskimos who lived their full life without a heart attack. The Eskimo diet consists of 97% meat, which he concedes causes all Eskimos to develop atherosclerosis—a common precursor to heart disease. But Cordain says Eskimos never die of heart disease. He discusses one Eskimo who lived 45 years and another who lived 53 years, both without heart disease! He then jumps to the conclusion that because these Eskimos didn’t get heart attacks, even with severe atherosclerosis, meat must have protected them from heart disease. So Cordain’s best case for lots of meat is that you can live to the ripe age of 45 or even 53 without a heart attack. But do people—even unhealthy smokers or the obese—generally get heart attacks before age 53?

Sweden's Staffan Lindeberg has a home page Paleolithic Diet in Medical Nutrition [archive.org]. A recent study of Staffan's has A Paleolithic diet improving glucose tolerance more than a Mediterranean-like diet in individuals with ischemic heart disease. Also see his first web page, an overview of his Kitava study: On the Benefits of Ancient Diets. Now he has a book Food and Western Disease: Health and nutrition from an evolutionary perspective. Here's a book review: Easy to Read, Informative, Packed with Footnotes on Studies.
Cordain admits that meat leads to plaque and increases cholesterol where plants wouldn’t. And science establishes that plaque and cholesterol lead to heart attacks and strokes. But Cordain argues that plaque alone is insufficient to cause harm. Rather, it is plaque combined with inflammation that causes heart attacks and strokes. So avoid acid, salt, legumes, wheat, starchy vegetables, dairy, oil, fatty meats, and grains because they cause inflammation. But if both science and Cordain agree that plaque is a necessary part of the heart-disease equation—and that meat causes plaque—why should we follow Paleo rather than just forgo meat?

The best part of CFA are the people! CrossFit has really changed my life and my perspective on so much. There are so many things that CrossFit and it’s community of people, especially the women, have taught me. I’ve finally found not only an outlet I was missing since my gymnastics days, but also a group of people who continually inspire me, support me and others, and are genuinely interested in seeing their peers meet goals. CrossFit has completely solidified my viewpoint that people and relationships matter most in life.


Get takeout flavor without the mystery additives: This Whole30 recipe recreates a comfort food classic with clean ingredients like fresh ginger, steak, and broccoli. Stay more Bulletproof and use grass-fed beef, arrowroot starch, coconut aminos, and coconut oil to cook. Plus, avoid enjoying black pepper and garlic too often, and consider steaming broccoli instead of stir frying.
Well Fed: Paleo Recipes for People Who Love to Eat by Melissa Joulwan has recipes for food that you can eat every day, along with easy tips to make sure it takes as little time as possible to prepare. All recipes are made with zero grains, legumes, soy, sugar, dairy, or alcohol. Calorie-dense ingredients like dried fruit and nuts show up as flavoring, instead of primary ingredients. It will also show you how to how to mix and match basic ingredients with spices and seasonings that take your taste buds on a world tour. With 115+ original recipes and variations. The author is a popular blogger at The Clothes Make The Girl. All Amazon reviews are positive. Published December 12, 2011.

Joel Runyon is the founder of Ultimate Paleo Guide and CEO of Paleo Meal Plans. He's a precision nutrition, and Gym Jones Level 1 certified, and helped millions of people get healthy and lose weight since 2012. Joel is also an ultra runner and endurance athlete - and in 2017, he became the the youngest person to run an ultra marathon on every continent in the world to build 7 schools with Pencils of Promise in developing countries.Follow him on Twitter, Instagram, Athlinks and read his full bio here.
Another 2014 study in the European Journal of Clinical Nutrition compared the effects of the Paleo plan to those of a standard low-fat diet on 70 obese, postmenopausal women. After six months, the Paleo group lost 14 pounds on average, while the other group lost nearly 6 pounds. After a year, the Paleo group had lost 19 pounds on average, and the low-fat dieters had dropped 10 pounds. A year later, both groups had regained some weight: The Paleo group was still down 10 pounds, while the low-fat group had dropped an average of more than 6 pounds.

A metaresearch group at Tilburg University in the Netherlands investigates scientists’ research methods and operations, scrutinizing questionable practices such as selective reporting of statistical tests and data massaging. The group instead advocates for practices such as preregistering studies and making experimental data immediately available for open external review and verification. Its members are optimistic that “the perverse incentives of careerist academia, to hoard data and sacrifice rigor for headline-generating findings, will ultimately be fixed.”
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