The paleo diet is promoted as a way of improving health. There is some evidence that following this diet may lead to improvements in terms of body composition and metabolic effects compared with the typical Western diet or compared with diets recommended by national nutritional guidelines. There is no good evidence that the diet helps with weight loss, other than through the normal mechanisms of calorie restriction. Following the paleo diet can lead to nutritional deficiencies such as an inadequate calcium intake, and side effects can include weakness, diarrhea, and headaches.
The paleo diet runs on the same foods our hunter-gather ancestors supposedly ate: fruits, vegetables, meats, seafood, and nuts. "By following these nutritional guidelines, we put our diet more in line with the evolutionary pressures that shaped our current genetics, which in turn positively influences health and well being," says Loren Cordain, PhD, professor of health and exercise science at Colorado State University and author of The Paleo Diet. He says the diet lessens the body's glycemic load, has a healthy ratio of saturated-to-unsaturated fatty acids, increases vitamin and nutrient consumption, and contains an optimal balance of protein, fat, and carbohydrates.
The program was created by wife and husband Melissa Hartwig and Dallas Hartwig in 2009. They both became certified sports nutritionists; he worked as a physical therapist, and she was working at an insurance company during the day and doing nutritional consulting in her spare time. She quit her job to run the Whole30 business in 2010. They co-authored It Starts With Food (2012) and The Whole30: The 30-Day Guide to Total Health and Food Freedom (2015). They separated in 2015. Melissa Hartwig took over the business, and published Food Freedom Forever: Letting Go of Bad Habits, Guilt, and Anxiety Around Food in 2016.
Trick And Treat - how 'healthy eating' is making us ill by Barry Groves. The author is one of the world's most outspoken proponents of a high-fat, low-carbohydrate diet. This book is an account of how and why the health-care establishment has got the concept of 'healthy eating' so wrong. Whereas Taubes work (see above) is a fairly straight forward review of the existing science, Groves expands into the politics of medical research and treatment to a much greater extent. "Trick and Treat" is divided into two parts. Part One describes the corruption in the health industry, points out the problems inherent in a high-carb, low-fat diet, and then prescribes a diet that leads to good health. The prescribed diet is high in fat - specifically animal fat, not polyunsaturated vegetable fat - and low in carbohydrates, with 60-70% of calories from fat, 15-25% of calories from protein, and a mere 10-15% of calories from carbohydrates. Part Two describes numerous diseases the author claims are the result of high carbohydrate consumption. These range from life-threatening disorders such as cardiovascular disease, diabetes, and cancer to less serious problems such as acne, near-sightedness and dental problems. The Amazon reviews average to 4+ stars.
Do not step on the scale or take any body measurements for 30 days. The Whole30 is about so much more than weight loss, and to focus only on body composition means you’ll overlook all of the other dramatic, lifelong benefits this plan has to offer. So, no weighing yourself, analyzing body fat, or taking comparative measurements during your Whole30. (We do encourage you to weigh yourself before and after, so you can see one of the more tangible results of your efforts when your program is over.)
I cannot possibly put enough emphasis on this simple fact—the next 30 days will change your life. It will change the way you think about food. It will change your tastes. It will change your habits and your cravings. It will restore a healthy emotional relationship with food, and with your body. It has the potential to change the way you eat for the rest of your life. I know this because I did it, and millions of people have done it since, and it changed my life (and their lives) in a dramatic and permanent fashion.
There will be two Opens in 2019. Our first Open of the year just kicked off on February 21st, and will run will 5 weeks. This if Open will be a similar structure to the one we’re used to. The other Open will be in October. The October Open will help determine the athletes participating in the 2020 games. From then on, the Open will be in October only. As of right now, we have no insight as to what the October Open will look like or when the 2020 Games will take place.
Grass-fed beef is often highlighted on the diet, which is promoted to contain more omega-3 fats than conventional beef (due to being fed grass instead of grain). It does contain small amounts of alpha-linolenic acid (ALA), a precursor to EPA and DHA. However, only a small proportion of ALA can be converted in the body to long-chain omega-3 fatty acids (EPA and DHA). The amount of omega-3 is also highly variable depending on the exact feeding regimen and differences in fat metabolism among cattle breeds.  In general, the amount of omega-3 in grass-fed beef is much lower than that in oily marine fish.  Cooked salmon contains 1000-2000 mg of EPA/DHA per 3-ounce portion, whereas 3 ounces of grass-fed beef contains about 20-200 mg of ALA.
There is little argument over the health benefits of fruits and vegetables. They are chock-full of vitamins, minerals, fiber and antioxidants. The only caveat for paleo dieters is that some vegetables are starchy (e.g., potatoes) and some fruits are higher in sugar (e.g., bananas). So, if you are trying to lose weight or watch your blood sugar levels, eat these in moderation. In fact, potatoes are banned from some strict versions of the diet.
The Great Cholesterol Con: The Truth About What Really Causes Heart Disease and How to Avoid It by Dr. Malcolm Kendrick reveals that high cholesterol levels do not cause heart disease; that high-fat diets–saturated or otherwise–do not affect blood cholesterol levels; and that for most men and all women the benefits offered by statins are negligible at best. Other data is also provided that shows that statins have many more side affects than is often acknowledged.
The New Evolution Diet: What Our Paleolithic Ancestors Can Teach Us about Weight Loss, Fitness, and Aging by Arthur De Vany. Art is the grandfather of the "Paleo Lifestyle" movement. The plan is built on three principles: (1) eat three meals a day made up of nonstarchy vegetables, fruits, and lean proteins; (2) skip meals occasionally to promote a low fasting blood insulin level; and (3) exercise less, not more, in shorter, high-intensity bursts. Note that the book is anti-fat. All oils are to be avoided, though canola is considered okay for higher temperatures. Egg yolks are to be skipped now and then. Published December 21, 2010.
Due to CrossFit's official partnership with Reebok, competitors at the 2015 Games were banned from wearing Nike footwear. Nike arranged for several trucks to be parked near the main entrance to the arena, which served as mobile billboards with the slogan "Don't ban our shoe, beat our shoe". The partnership also prohibits Nike from labeling its Metcon shoes as intended for CrossFit – the brand uses the term "high intensity training" instead.
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?
Gluten is a protein found in things like rye, wheat, and barley. It’s now being said that much of our population may be gluten-intolerant (hence all the new “gluten-free!” items popping up everywhere). Over time, those who are gluten intolerant can develop a dismal array of medical conditions from consuming gluten: dermatitis, joint pain, reproductive problems, acid reflux, and more.
No background science here or lengthy explanations, only 15 easy guidelines to follow to kick-start your Paleo journey. It’s up to you to decide to what extent you want to follow those guidelines, but if you follow them 100% you can be assured that you are eating the best food for your body and greatly investing in your long term health and well-being.
This is a complete list of foods not allowed on the paleo diet. It’s a sad day when you first have to say goodbye to these foods but, once you start, it’s much easier and you find there are even better paleo substitutes for these foods. The first few weeks might be tough, but if you stick with it over time, it’ll be worth it. We promise. Here’s the ultimate list of foods not allowed on the paleo diet.
You’ll be exposed to a ton of new, delicious recipes. If you know you’re not the cooking type, start simple. Instead of making the fancy egg-bake in a cast-iron pan, grab some eggs, veggies, sausage, and avocado then scramble your breakfast. Top it with (sugar-free) hot sauce, and you'll have yourself a solid meal in seven minutes. Don't be afraid to make that for breakfast five times a week; making similar meals over and over again is easier than trying to whip up (new) complicated ones.
Finding Whole30-approved options at restaurants can be tricky, especially since added sugar is a no-no (and seriously, the sweet stuff is in basically everything). This means you'll be doing a lot of home cooking. Rather than try to figure out meals and snacks on the fly, plan a week's worth of eats ahead of time. Need some ideas? Try some of these Whole30-approved recipes, pick up The Whole30 Cookbook, or use the Whole30 online meal planner tool.
As far as food goes, you’re simply going to eat a lot of fresh, good-quality eats and ditch the processed stuff. Beyond that, you’re removing all grains, dairy, soy, legumes, sugar, artificial sweeteners, and alcohol from your diet. All of these foods (especially in excess), according to the authors, have been linked to systemic inflammation, hormonal imbalance, gut issues, and more. The idea is to remove the stressors from your body and give it the nourishment and time to heal itself it needs. This means less inflammation, a healthy metabolism, hormonal harmony, a happy gut, clearer skin, and improved energy! Sounds good to me. (Although if we’re honest, I panicked a bit when I realized no cheese would hit my lips for a full month.)
CrossFit gyms use equipment from multiple disciplines, including barbells, dumbbells, gymnastics rings, pull-up bars, jump ropes, kettlebells, medicine balls, plyo boxes, resistance bands, rowing machines, and various mats. CrossFit is focused on "constantly varied, high-intensity, functional movement," drawing on categories and exercises such as calisthenics, Olympic-style weightlifting, powerlifting, Strongman-type events, plyometrics, body weight exercises, indoor rowing, aerobic exercise, running, and swimming.