Since April 2009, millions of people have successfully completed our Whole30 program with stunning, life-changing results. This is a summary of the official rules of the Whole30. For in-depth information about planning and preparing for the program, a comprehensive FAQ, and more than 100 totally compliant recipes, refer to our New York Times bestselling book, The Whole30: The 30-Day Guide to Total Health and Food Freedom. (Or click here for an abbreviated version.)
While the diet as a whole hasn't been well studied, the benefits of cutting packaged foods from your diet could be huge. According to the Harvard School of Public Health, three quarters of the average American's sodium intake (which is almost double what it should be!) comes from commercially prepared foods. And, one Public Health Nutrition study found that people who cook at least five times a week are 47% more likely to be alive 10 years later compared to those who rely more on processed foods.
Most Paleo dieters of today do none of this, with the exception of occasional hunting trips or a little urban foraging. Instead, their diet is largely defined by what they do not do: most do not eat dairy or processed grains of any kind, because humans did not invent such foods until after the Paleolithic; peanuts, lentils, beans, peas and other legumes are off the menu, but nuts are okay; meat is consumed in large quantities, often cooked in animal fat of some kind; Paleo dieters sometimes eat fruit and often devour vegetables; and processed sugars are prohibited, but a little honey now and then is fine.
If you have been in a state of dependency on food--be it sugars, alcohol, chips, ice cream, just about anything--or if you have been unwell, unsuited to the world physically or emotionally--or, if you simply feel blah and would like to lose a little bit of weight--please consider trying this program. You might think, "I don't eat that badly! I eat a lot of whole foods!" which is what most people think of themselves (I sure did). But when you actually make a conscious decision to eliminate foods from your diet, you will see that even the small amounts of crap that you've been eating regularly matter. Prepare to be amazed. I sound like an evangelical, I know. It's a little embarrassing. But it is all true.
Don’t even consider the possibility of a “slip.” Unless you physically tripped and your face landed in a pizza, there is no “slip.” You make a choice to eat something unhealthy. It is always a choice, so do not phrase it as if you had an accident. Commit to the program 100% for the full 30 days. Don’t give yourself an excuse to fail before you’ve even begun.
Combining higher protein intake and fresh vegetables leads to another major benefit: blood sugar stabilization. Between 35 and 45 percent of the average Paleo diet is comprised of non-starchy fresh fruits and vegetables that won’t spike blood sugar levels, making it an optimal diet for diabetes prevention. This is because nearly all of these foods have low glycemic indices that are slowly digested and absorbed by the body.
In fact, wise keto dieters know they don't have to completely forgo the healthiest carbs. Foods like carb-laden tomatoes and fatty carb-loaded avocados can be incorporated into a keto diet without ruining ketosis, since they're heavy in fiber. For example, more than 75% of the carbs in spinach are fiber, making it a relatively safe choice for keto-ers.
The Great Cholesterol Con by Anthony Colpo. The definitive book on the non-dangers of dietary cholesterol and saturated fat was The Cholesterol Myths by Uffe Ravnskov, 2000. This book is six years newer. Its forward is by Uffe Ravnskov. To get a wonderful description of the book read the leading review at Amazon. The many reviews there average to 5 stars.
If you're interested in the paleo plan but don't think you want to be so strict, you don't have to be all-or-nothing with your approach. Consider adopting some eating patterns from paleo and skipping the ones that don't work for you. For example, try just eating more fruits and vegetables and cutting down on added sugars. If you feel unsure about grains or dairy, talk to your doctor or a registered dietitian to determine what's best for your body.
A diet high in phytic acid, which can be found in whole grains (it's in the bran) and beans like soy, is very detrimental for mineral absorption. Phytic acid strongly binds to minerals like calcium, iron, zinc and magnesium to form insoluble salts, phytates, which precipitate from the body and are not absorbed. Staffan Lindeberg has written a summary on phytic acid.
Cordain argues that chimpanzees and horses avoid meat, and they have big bellies that we would have if we didn’t ditch plants for meat. He also says meat increased human brain size, and decreased stomach size so we can have the six-pack abs that chimps can’t. But I looked at his endnotes with citations to research and couldn’t find the source for these theories. I also couldn’t find research showing that legumes and grains were invented by humans.
Advocates of the diet argue that the increase in diseases of affluence after the dawn of agriculture was caused by changes in diet, but others have countered that it may be that pre-agricultural hunter-gatherers did not suffer from the diseases of affluence because they did not live long enough to develop them. Based on the data from hunter-gatherer populations still in existence, it is estimated that at age 15, life expectancy was an additional 39 years, for a total age of 54. At age 45, it is estimated that average life expectancy was an additional 19 years, for a total age of 64 years. That is to say, in such societies, most deaths occurred in childhood or young adulthood; thus, the population of elderly – and the prevalence of diseases of affluence – was much reduced. Excessive food energy intake relative to energy expended, rather than the consumption of specific foods, is more likely to underlie the diseases of affluence. "The health concerns of the industrial world, where calorie-packed foods are readily available, stem not from deviations from a specific diet but from an imbalance between the energy humans consume and the energy humans spend."
In response to these criticisms, CrossFit, Inc. claims, “CrossFit is relatively safe even when performed with poor technique, but it is safer and more effective when performed with good technique.” CrossFit, Inc. also claims risk for injury can be reduced by properly scaling and modifying workouts, a concept taught on its website and at the CrossFit Level 1 Trainer Course.