Research from a 2008 study published in the Journal of the American Gastroenterological Association showed that patients with irritable bowel syndrome (IBS) report symptom improvements after initiating a very low-carbohydrate diet (VLCD). When participants with moderate to severe IBS were provided a two-week standard diet, then four weeks of a VLCD (20 grams of carbohydrates a day), the majority reported improvements in abdominal pain, stool habits and quality of life. (15)
In addition to keeping you adequately hydrated -- which can also help alleviate constipation -- drinking lots of water can also help offset still another low-carb diet problem: bad breath. The ketones produced during the diet can lead to what is sometimes described as a fruity odor although it is often described as having an almost "chemical" odor similar to acetone or nail polish remover.
As mentioned above, the effect of low-carb diets on cardiovascular risk factors continue to be controversial.  While a few studies have demonstrated an increase in LDL cholesterol with low-carb diets, others showed negligible changes.  However, other metabolic markers, such as lowering TG, increases in HDL, have been demonstrated with low-carb diets.[4][25][16]

It should be noted that U.S. News & World Report just released its annual ranking of diets, and Whole30 ranked dead last. Why? Essentially, the expert panel of over 20 registered dietitians, academics, and medical doctors found the program unsustainable and potentially unhealthy, since, among other issues, it restricts certain food groups and is high in sodium and cholesterol. But, Whole30's co-creator Melissa Hartwig stands behind the program, telling Cosmopolitan.com that its animal protein recommendations are in line with government recommendations, and that there are no nutrients in temporarily restricted foods, like grains and legumes, that you can't find in fruits and vegetables.
The Garden of Eating: A Produce-Dominated Diet & Cookbook by Rachel Albert-Matesz and Don Matesz presents evidence for a diet of vegetables, fruits, and pasture-fed animal products. Provides a practical plan and 250 delicious, family-friendly, grain- and dairy-free recipes. Buy from the author's page The Garden of Eating. Rachel's blog The Healthy Cooking Coach. The cookbook maintains a perfect rating at Amazon.
The Paleo Diet focuses on foods that are high in protein, low in carbs, and rich with fiber. There's a strong emphasis on meat, fruits, and vegetables — basically, anything our ancestors would have consumed more than 10,000 years ago during the Paleolithic era. (There's actually some truth to this: in July 2018, when researchers identified the stomach contents of the 5,300-year-old mummy Otzi, they found that his last meal was high-fat and contained "animal and plant remains," making it pretty Paleo-friendly.)

The first week was the hardest. I quickly learned that meal prep was essential to survive this program. Since everything you’re eating isn’t processed, there’s a lot of planning that goes into being able to have an easy week. If I prepped on Sunday nights for the whole week by filling my fridge with things I could easily eat, and doing things like pre-slicing veggies for those hunger emergencies, I did great.


Hi there Libby, just to let you and your readers know, I have been low carb for over a year now, ( sometimes I fall down and have processed carbs, mostly when I am travelling away from home) and the good news is I was diabetic, and now I am pre-diabetic, which is huge :O) I have also lost a small amount of weight in the process ( still more to go :O) but this eating plan makes me feel normal again, not always hungry, and I am a lot healthier than I was :O) now all I need to do is make exercise a habit :O) So thank you so much for all the time and energy you put in to this site, and all of these wonderful recipes :O)

The Lazy Paleo Enthusiast's Cookbook: A Collection of Practical Recipes and Advice on How to Eat Healthy, Tasty Food While Spending as Little Time in the Kitchen as Possible by Sean Robertson. The author is a recovering vegan and in the first half of the book recounts his dietary experiences using some paleo foods to restore his health. You learn that the author's main strategy is to make food in large batches which can be reheated to provide dinners for several days running. The second half of the book contains 28 recipes. Some borderline or nonpaleo ingredients do appear, but most of the recipes are more paleo than not. Published November 15, 2011.

"One of the primary places where you are going to see metabolic changes on any kind of diet is in your gastrointestinal tract -- and that can include a change in bowel habits often experienced as constipation," says Sondike, who is also credited with conducting the first published, randomized clinical trial on low-carb diets. The reason, Sondike tells WebMD, is that most folks get whatever fiber they consume from high-carb foods such as bread and pasta. Cut those foods out, and your fiber intake can drop dramatically, while the risk of constipation rises.
The aspects of the paleo diet that advise eating fewer processed foods and less sugar and salt are consistent with mainstream advice about diet.[1] 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.[3][6] 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;[1][20] it can also lead to an increased risk of ingesting toxins from high fish consumption.[3]
The National Academy of Medicine recommends a minimum intake of 130 g of carbohydrate per day.[23] The FAO and WHO similarly recommend that the majority of dietary energy come from carbohydrates.[24][25] Low-carbohydrate diets are not an option recommended in the 2015-2020 edition of Dietary Guidelines for Americans, which instead recommends a low fat diet.
The China Study is frequently cited when criticizing the Paleo Diet – focusing on a vegetarian diet and consuming rice is healthier than the Paleo Diet. I respectfully disagree with the conclusions drawn from that book but that’s awesome if you want to go plant-based! [7], and will leave you to make your own conclusions based on your own self-experimentation.
Jan Engvald has studied food and health thoroughly in the literature. In Unexpected facts on... food he shows that today's health advice (more or less unchanged for more than 30 years) is a direct cause to the increase in national diseases like coronary heart disease, stroke, cancer, obesity, adult-onset diabetes, allergy, eye diseases, etc. His findings are low-carb and high-fat, close to paleo, though he allows high fat dairy.

The Paleo Answer: 7 Days to Lose Weight, Feel Great, Stay Young by Loren Cordain. The author shows you how to supercharge the Paleo diet for optimal lifelong health and weight loss. Featuring a new prescriptive 7-day plan and surprising revelations from the author's original research, it's the most powerful Paleo guide yet. Published December 20, 2011.
Hi Cyn, The numbers are general guidelines but will vary depending on many factors, such as activity level, insulin resistance, weight and more. There is no single magic number, just conventional recommendations that are a good starting point. I will have a macro calculator coming soon that will help determine what is best for each person, but even then it’s an approximation. The only way to know for sure is to test. If keto is your goal, it’s usually best to start lower and then see if you can stay in ketosis when increasing.

Your only job during the Whole30 is to focus on making good food choices. You don’t need to weigh or measure, you don’t need to count calories, you don’t need to purchase everything organic, grass-fed, pastured, or local. Just figure out how to stick to the Whole30 rules in any setting, around every special circumstance, under any amount of stress… for 30 straight days. Your only job? Eat. Good. Food.
Ideally one should eat a wide variety of proteins from as many animal sources as possible. One need not and should not avoid fatty cuts of meat, particularly if consuming pastured sources. An often overlooked piece of the paleo diet in popular culture is an over-reliance on standard cuts of meat, at the expense of organ meats, bone broth and other collagen sources. For more information on the historical and practical aspects of consuming a more balanced protein intake, check out the Weston A. Price Foundation. If weight-loss is a goal, protein makes you feel satisfied between meals.
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