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.
This list is going to be a little longer than the last. You cut out all sugar (both real and all substitutes whether natural or artificial, like honey, maple syrup, Splenda, etc.). No grains, legumes (including all forms of soy), dairy, or alcohol. You’re also told to avoid additives like MSG and carrageenan, although that should happen naturally if you’re sticking to whole foods.
Downsides: Prepare for a bit of a rise in grocery cost. Prepared foods cost less than whole foods. This is American governmental ag subsidies in a nutshell. It's unfortunate and unfair, but true. Also, as others have mentioned, you will be in the kitchen more. Again, it helps if one of you cooks and the other cleans up. It's a little annoying to be sure, but the results are more than worth the annoyances. It is also very difficult to eat out. You pretty much are limited to places that are expensive and accommodating, delis where you know and trust the ingredients, or Chipotle. Again, the slight isolation (if you can do this or at least begin it when you have a little time to spare and don't have a lot of socializing) helped.
If you've been on the Whole30 and counting down the days until February 1st, step away from the cheese! Before you transition back to your normal diet, here are five solid lessons that I learned from the eating plan that I stuck with even after the 30 days were up. Not only did following them beyond the 30 days prevent me from rebounding back to my higher weight, but they also help keep me on the straight and narrow the rest of the year when I’m not following the program.
Next, check out my gal Holly’s post about the process of reintroducing foods after completing a Whole30. As she reminds us, it’s important not to just go crazy on Day 31. Instead, “[e]xperiment with foods you miss, but do it in a way that will actually help you gather more information.” The Whole30 website also has a great post on what to do when your Whole30 is finished here.
The Paleo diet has been associated with many health benefits from better blood sugar levels to reduced inflammation. Considered one of the best diet plans for weight loss because it’s high in protein and fat and emphasizes nutrient-rich foods, it may also increase satiety and help correct nutrient deficiencies. Still, the diet has remained the subject of much controversy in recent years.
The aspects of the paleo diet that advise eating fewer processed foods and less sugar and salt are consistent with mainstream advice about diet. Diets with a paleo nutrition pattern have some similarities to traditional ethnic diets such as the Mediterranean diet that have been found to be healthier than the Western diet. Following the paleo diet, however, can lead to nutritional deficiencies such as those of vitamin D and calcium, which in turn could lead to compromised bone health; it can also lead to an increased risk of ingesting toxins from high fish consumption.
For many years Arthur De Vany Ph.D. has been writing a book called Evolutionary Fitness on "What Evolution Teaches Us About How to Live and Stay Healthy." The diet he follows fits into my core diet definition. He may have been the first one to use the paleo diet to maximize fitness. His current site is Art's Blog on Fitness, Health, Aging, Nutrition and Exercise [archive.org].
Lutein/Zeaxanthin and Macular Health is an article discussing antioxidents and protection against the oxidizing ultraviolet radiation of the sun. The best dietary sources of antioxidants in general, and carotenoids specifically, are fruits and vegetables and the more brightly colored, the better. Lutein and zeaxanthin are yellow pigments found in high concentrations in yellow fruits and vegetables as well as in dark green, leafy vegetables. In particular, spinach, kale and collard greens contain high levels of these two carotenoids.
Healthy, delicious, and simple, the Paleo Diet is the diet you were designed to eat. If you want to lose weight—up to seventy-five pounds in six months—or if you want to attain optimal health, The Paleo Diet will change your life now. Dr. Loren Cordain, the world's leading expert on Paleolithic nutrition, demonstrates how by eating all the lean meats and fish, fresh fruits, and nonstarchy vegetables you want, you can lose weight and prevent and treat heart disease, cancer, osteoporosis, metabolic syndrome, and many other illnesses. Incorporating all the latest breakthroughs in Paleo nutrition research, this new edition of the bestselling The Paleo Diet includes six weeks of meal plans to get you started on the Paleo path to weight loss, weight control, increased energy, and lifelong health.
In the past few decades, our diets have changed dramatically. Processed foods are more common than fruits and vegetables, and it’s impossible to go more than a few miles down the road without spotting a dozen new fast food chains that have cropped up. Enter the Paleo diet plan, a diet that seeks to ditch the modern convenience foods in favor of the foods eaten by our ancestors.
Exercise is a vital part of the live-by-your-genetic-code equation. Surviving in the Stone Age meant a constant on-the-go lifestyle that probably required 4,000-plus calories a day, according to David L. Katz, MD, director of the Yale University Prevention Research Center. Even most people who hit the gym regularly won't need to eat that many calories, but the principle of using food as fuel to exercise still stands.
NeanderThin: Eat Like a Caveman to Achieve a Lean, Strong, Healthy Body (Hardcover) by Ray Audette, with Troy Gilchrist, was one of the early paleo diet authors. His home page NeanderThin [now restored from archive.org] has a diet based on the ideas of paleolithic nutrition. The diet can be followed as a low-carb, moderate or high carb diet, depending upon whether and how much fruit is used. You can read up through page 19 of the book at Google Books. The original press release from 1999. [The webmaster has an extra copy with the author's signature for sale. It has the original lime-purple cover. Pristine new condition. $60 (shipping included). Paypal only. Use e-mail link at page bottom.]
Former athletes – CrossFit has built-in teamwork, camaraderie, and competition. Almost all workouts have a time component to them, where you either have to finish a certain number of repetitions of exercises in a certain amount of time, or the time is fixed and you need to see how many repetitions you can do of an exercise. You get to compete with people in your class, and go online to see how you did against the world’s elite CrossFit athletes. There is even an international competition for those that become truly dedicated.
Our ancestors didn't chase cows and chickens around in the wild. They hunted game, antelopes, buffalo, and probably some animals we've never heard of that are long extinct. Their meat was generally quite lean, and provided more healthy omega 3s than meats from modern day animals, even the grass-fed ones, according to Dr. Katz. Many of the plants that thrived back then are also extinct today, making it impossible to truly follow their meal plan, he says.
The "CrossFit Games", directed by Dave Castro, have been held every summer since 2007. Athletes at the Games compete in workouts they learn about only hours beforehand, sometimes including surprise elements that are not part of the typical CrossFit regimen. Past examples include a rough-water swim, a softball throw, and a pegboard climb. The Games are styled as a venue for determining the "Fittest on Earth," where competitors should be "ready for anything."