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compare and contrast dr ornish and dr atkins

1987;76:504-507. If moderate changes are not sufficient to achieve the desired goals, then the patient can be encouraged to make more intensive ones. Eating a high glycemic index food along with mostly low glycemic index foods may reduce the overall glycemic load of the meal. An AHA/NCEP 30% fat diet reduces LDL-C by only about 5% to 7% in most patients (22-24). Founder and president, Preventive Medicine Research Institute Clinical Trials in Cardiovascular Disease. Pres. Connor WE, Connor SL. But Ornish is conflating hot dogs and pepperoni with fresh, unprocessed meats, says Lydia Bazzano, professor of nutrition and epidemiology at Tulane University School of Public Health and Tropical Medicine, and theres a big difference between them. A 2010 systematic review and meta-analysis of 20 studies found consumption of processed meat was associated with an increased risk of diabetes and heart disease but eating unprocessed red meat was not. J Am Diet Assoc. Buzzano notes that even high-fat dietsif they are high in the right fatscan be healthy and help you lose weight. Past studies also support the claim that low-carb diets are more effective than low-fat. You can hear some of their stories here. Prev Cardiol. Fourth, the Gardner study did not really test very much of anything, other than its hard for many people to change their dietsany dietfrom just reading a book. Editor's Note: Our April 22 article elicited a lengthy response from Dean Ornish, which we publish here, along with a rebuttal from Melinda Wenner Moyer. Available at: http://hin.nhlbi.nih.gov/atpiii/calculator.asp?usertype=prof . (In contrast, the recommendations of the American Heart Association allowed up to 30 percent of total calories from fat and 300 mg of cholesterol daily.) Copyright [c] 2004 by the American Dietetic Association. Prev Cardiol. 1994;1:283-286. The other problem with Ornishs antiprotein stance is that he lumps all animal proteins together. Urinary excretions of calcium and acids are correlated positively with intakes of animal and nondairy animal protein but are correlated negatively with plant-protein intake (53). Although this study was limited by not having a randomized control group, the burden of proof is on the advocates of high-protein diets to show otherwise, especially given the large amount of data from other epidemiological studies, animal research, and randomized controlled trials linking the intake of a diet high in animal fat and protein with the incidence of CHD. When you eat less fat, you consume fewer calories without having to eat less food, thereby increasing satiety without adding calories. Knight EL, Stampfer MJ, Hankinson SE, et al. In other words, the diet I recommend causes weight loss, not weight gain. J Am Coll Nutr. But what about the claims Ornish makes about the success of his own dietdo they hold up to scrutiny? The results of the trial, published in 1990, revealed that at least some effects of coronary atherosclerosis had been reversed in many patients. Insulin may also raise the secretion of lipoprotein lipase, increasing the uptake of fat into cells, leading to weight gain (10). As all dietetics professionals know, there is no mystery in how to lose weight: burn more calories and/or eat fewer calories. 1990;336:129-133. Bushinsky DA, Chabala JM, Gavrilov KL, Levi-Setti R. Effects of in vivo metabolic acidosis on midcortical bone ion composition. For instance, he wrote that animal proteins have been associated with higher disease and mortality risks in observational studies. Brinton EA, Eisenberg S, Breslow JL. Diet was assessed by validated food frequency questionnaires and updated every four years. Upon changing from high to low intake of saturated fat and cholesterol, the mean HDL-C decreased 29%, whereas apo A-I levels fell 23%. Paradoxically, it may sometimes be easier for people to make more comprehensive changes in diet and lifestyle because they experience the benefits so quickly and to a much greater degree (25,64). Body weight is inversely associated with dietary fiber and carbohydrates and positively associated with protein intake (11). The participants all had trouble adhering to their regimens, but all lost about the same statistically significant amounts of weight, and when compared head to head, the Atkins dieters saw greater improvements in blood pressure and HDL cholesterol than the Ornish dieters did. This optimal diet is based predominantly on fruits, vegetables, grains, and legumes in their natural, unrefined forms. Please refer to the appropriate style manual or other sources if you have any questions. The decrease in HDL-C and apo A-I levels correlated with the decrease in apo A-I transport rate but not with the increase in apo A-I FCR. Westman EC, Yancy WS, Edman JS. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. N Engl J Med. In rural China, for example, the average LDL is less than 95 mg/dL. Ornish D. Dietary treatment of hyperlipidemia. Weight loss was greater for women in the Atkins diet group compared with the other diet groups at 12 months, and mean 12-month weight loss was significantly different between the Atkins and Zone diets (P less than .05). In our randomized controlled Lifestyle Heart Trial, HDL cholesterol did not increase but patients showed regression of coronary atherosclerosis after one year, even more improvement after five years, and a 300 percent improvement in myocardial perfusion (blood flow to the heart) as measured by cardiac PET scans. Ornish begins his piece with a misleading statistic. Analyses of all pairwise differences by the Tukey standardized range test (<.05) indicate that the Atkins diet group was significantly different than all other diet groups at 2 and 6 months and that the Atkins diet group was significantly different than the Zone diet group at 12 months. The mechanism of the effects on HDL-C levels of changing from a high- to low-fat diet differs substantially from the mechanism explaining the differences in HDL-C levels between individuals who are eating a high-fat diet. I would love to be able to tell you that these are health foods, but they are not. Stevens A, Robinson DP, Turpin J, et al. In: Cowdry EV, ed. The percentage of calories from fat has decreased, but the amount of fat consumed has increased (6). You can lose weight without feeling hungry or deprived. Bonow RO, Eckel RH. Regulation of low-density lipoprotein receptors: Implications for pathogenesis and therapy of hypercholesterolemia and atherosclerosis. Not exactly. Ornish begins his piece with a misleading statistic. Am J Clin Nutr. If they stop eating pasta, they are often avoiding sauces that are high in oil or cream (olive oil is 100% fat and only 1 tablespoon has 14 g fat). Even better would be to reduce the intake of simple carbohydrates and most fats, which results in losing even more weight while enhancing health rather than potentially harming it. An Atkins diet often shows a greater reduction in triglycerides by comparison. 2003;348:2082-2090. He is recognized internationally as a leader in the field of nutritional influences in neurological disorders. Diabetes Care. It found that individuals assigned to eat high-fat (41 percent calories from fat), Mediterranean-style diets for nearly five years were about 30 percent less likely to experience serious heart-related problems compared with individuals who were told to avoid fat. You used to find a lot more people interested in For 37 years he has been touting the benefits of very low-fat, high-carbohydrate, vegetarian diets for preventing and reversing heart disease. An example of the half-truth of saying that anything that raises HDL-C is beneficial whereas anything that lowers it is harmful came at the November 11, 2003 annual scientific session of the American Heart Association. BACKGROUND: In another study, 70% of patients on an Atkins diet for 6 months were constipated, 65% had halitosis, 54% reported headaches, and 10% had hair loss (59). Atkins Is Better Than Ornish, Stanford Study Says. 1995;274:894-901. Guidelines on diet, nutrition, and cancer prevention: Reducing the risk of cancer with healthy food choices and physical activity. Interaction of dietary cholesterol and triglycerides in the regulation of hepatic low-density lipoprotein transport in the hamster. Ornish D. Dr. Dean Ornishs Program for Reversing Heart Disease. As for Ornishs contention that the risk of premature death from all causes is higher in those eating red meat than those who do not, I disagree, because the 2014 meta-analysis of 13 studies that I discussed did not find this to be true. Liu S, Stampfer MJ, Hu FB, et al. Discover world-changing science. By planning to improv 2003;348:2057. And it is worth noting that among people in the study over 65, heavy consumption of animal protein actually protected against cancer and mortality. Anitschkow N. Experimental arteriosclerosis in animals. You can burn more calories by exercising. A 2014 meta-analysis similarly reported much higher mortality risks associated with processed meat compared with red meat consumption and found no problems associated with white meat. This was clearly stated in my New York Times oped: Moyer wrote: Nutrition is complex but there is little evidence our countrys worsening metabolic ills are the fault of protein or fat. N Engl J Med. 2nd ed. 1999;18:207-212. High total protein intake, particularly high intake of nondairy animal protein, may accelerate renal function decline (60). Recent studies also seem to provide some evidence that high-protein diets may have beneficial effects on cardiovascular disease (CVD) risk factors such as high-density lipoprotein (HDL) and triglycerides. One-year effectiveness of the Atkins, Ornish, Weight Watchers, and Zone Diets in decreasing body weight and heart disease risk. These are not theoretical discussions; they are real people who have shown substantial improvements in their health and well-beingnot just in risk factors but also in the underlying disease process. These studies have been conducted with well-respected collaborators, published in the leading peer-reviewed journals, and presented at the most credible scientific meetings. RESULTS: Zeman FJ, Hansen RJ. Induction of ventricular arrhythmias by elevation of arterial free fatty acids in experimental myocardial infarction. This case report is not proof, but it is worrisome, especially in that these disorders of electrolytes and free fatty acids that increase the risk of sudden cardiac death may be seen in high-protein diets. Mean apo A-II levels did not change. Ninety-nine percent of experimental group patients were also able to stop or reverse the progression of CHD as measured by cardiac positron emission tomography (PET) scans (38). 1999;84:339-341A8. Articles from Britannica Encyclopedias for elementary and high school students. Clinical professor of medicine, University of California, San Francisco Accessed March 5, 2004. WHAT EVIDENCE SUPPORTS THAT HIGH-PROTEIN DIETS MAY BE HARMFUL? In assessing the health effects of different diets its important to measure the disease process itself, not just risk factors such as blood pressure and cholesterol levels. Ornish represented the other viewpoint with his fruits, veggies, and sharp criticisms of Atkins. New York: McGraw Hill; 2002. What is missing in Moyers article is the clinical experience that comes from helping people change their diet and lifestyle. The March 2014 study that Ornish cites as finding a 75 percent increase in premature deaths from all causes and a 400 percent increase in deaths from cancer and type 2 diabetes among heavy consumers of animal protein under the age of 65, also did not distinguish between types of animal protein. I wrote: For example, in the OmniHeart trial she cited, the group that was asked to consume 10 percent more protein emphasized plant proteins, not animal protein. 1999, and In: Braunwald E, ed. But even if the NHANES data are accurate, they show Americans are eating more fat than ever and even more refined carbohydrates than ever. N Engl J Med. 1990;85:144-151. I am not against all forms of animal protein. Ketone bodies formed on a high-protein diet undergo urinary excretion with a cation to maintain electrical neutrality, resulting in the loss of cations such as calcium, magnesium, and potassium (55,56). Other studies have documented that an AHA/NCEP diet is not very effective in lowering LDL-C (21). Effects of diet and exercise in men and postmenopausal women with low levels of HDL cholesterol and high levels of LDL cholesterol. Nutrition is complex but there is little evidence our countrys worsening metabolic ills are the fault of protein or fat. Cambridge, MA: Harvard University Press; 1980. The New York Times, op-ed page, July 13, 2002. But its not true. 2002;76:535-540. These include JAMA The Journal of the American Medical Association, The Lancet, Proceedings of the National Academy of Sciences, The Lancet Oncology, The New England Journal of Medicine, The American Journal of Cardiology and others. 1998) showed an average reduction of 24 pounds in the first year. Resolving the coronary artery disease epidemic through plant-based nutrition. Protein, too, doesnt look so evil when one considers the 2010 trial published in The New England Journal of Medicine that found individuals who had recently lost weight were more likely to keep it off if they ate more protein, along with the 2005 OmniHeart trial that reported individuals who substituted either protein or monounsaturated fat for some of their carbohydrates reduced their cardiovascular risk factors compared with individuals who did not. INTERVENTION: The efficacy of intensive dietary therapy alone or combined with lovastatin in outpatients with hypercholesterolemia. Was Dr. Atkins Right? Functional foods: Position of the American Dietetic Association. Ornishs diet would probably be an improvement on the current American dietif people could actually follow it long-term. Also, in a randomized controlled trial, ketogenic diets such as the Atkins impaired cognitive performance in higher order mental processing after only 1 week (61). Am J Clin Nutr. You can specify conditions of storing and accessing cookies in your browser, Compare and contrast Dr. ornish and Dr Atkins, which virus is responsible for chickenpox?. Robert Atkins debates Dean Ornish and John McDougall on whether a low-carb, high-protein diet is Am J Kidney Dis. Let us know if you have suggestions to improve this article (requires login). In addition, patients on an Atkins diet are counseled to take n-3 fatty acids in the form of fish oil (something else we agreed on), which is known to reduce triglycerides significantly. The amount of dietary cholesterol and saturated fat in either a 30% fat diet or an Atkins diet may saturate and suppress the LDL receptor system, thereby leading to little fall in plasma LDL-C levels (29). In: Seman FJ, ed. Total fat and animal fat intake were higher and carbohydrate intake was lower in those with recently diagnosed diabetes or previously undiagnosed diabetes in the multinational, multicenter study of the Mediterranean Group for the Study of Diabetes (17). JAMA. Thus, neither an Atkins diet nor a 30% fat diet is very effective in lowering LDL-C or in maintaining long-term weight loss (25). David Perlmutter, MD, FACN is a board-certified neurologist, Fellow of the American College of Nutrition, and five-time New York Times bestselling author. As Moyer indicates here, the 2014 meta-analysis showed higher mortality risks associated with both processed meat and unprocessed meats. Plus, discouraging the intake of entire macronutrient groups can backfire. A paper was presented from Tufts University titled One Year Effectiveness of the Atkins, Ornish, Weight Watchers, and Zone Diets in Decreasing Body Weight and Heart Disease Risk. The researchers concluded All diets resulted in significant weight loss from baseline and all but the Ornish diet resulted in significant reductions in the Framingham risk score (45). , e gradually, what is Alonso thinking about? ", The recent multicenter PREDIMED trial also supports the notion that fat can be good rather than bad. But Ornishs arguments against protein and fat are weak, simplistic and, in a way, irrelevant. Saunders; 1998. Dean Ornish, in full Dean Michael Ornish, (born July 16, 1953, Dallas, Texas, U.S.), American physician and author whose approach to treating heart disease through radical diet modification and exercise generated significant debate in the medical community and attracted a popular following. To the degree that people reduce their overall intake of simple carbohydrates and excessive fat and increase their intake of whole foods such as complex carbohydrates, they are likely to lose weight and gain health. In other words, when you change the type of food, you dont have to be as concerned about the amount of food. But replacing animal protein with well-balanced plant proteins is beneficial, and this is in the mainstream of what most scientists who do nutrition research believe. Other high-protein diets such as the Zone and the South Beach diets are somewhat better but still emphasize consumption of meat, eggs, and butter. Bazzano and her associates concluded that going on a low-carb diet is better than a low-fat one for those wishing to lose weight. Journal of the American Medical Association 104(2004):537. The March 2014 study that Ornish cites as finding a 75 percent increase in premature deaths from all causes and a 400 percent increase in deaths from cancer and type 2 diabetes among heavy consumers of animal protein under the age of 65, also did not distinguish between types of animal protein. 1970;27:59-67. Twenty-eight were assigned to his low-fat, plant-based diet and 20 were given usual cardiac care. Insulin stimulates 3-hydroxy-3-meth-ylglutaryl coenzyme A reductase (which statin drugs inhibit), increasing lipid production, which may help to explain why high-protein diets do not always exacerbate hypercholesterolemia (26). Below is my letter to the editor of The New England Journal of Medicine that they published about this study: Protein, too, doesnt look so evil when one considers the 2010 trial published in The New England Journal of Medicine that found individuals who had recently lost weight were more likely to keep it off if they ate more protein, along with the 2005 OmniHeart trial that reported individuals who substituted either protein or monounsaturated fat for some of their carbohydrates reduced their cardiovascular risk factors compared with individuals who did not. Presented at the American Heart Association Scientific Sessions, Orlando, November 11, 2003. Thanopoulou AC, Karamanos BG, Angelico FV, et al. If they stop eating bagels, they may also stop eating the cream cheese. Reductions in total cholesterol, LDL-C, triglycerides, and total-to-HDL cholesterol ratios were significant only in patients who were following either a 10% fat diet or a 15% fat, calorie-controlled diet. Risk assessment tool for estimating 10-year risk of developing hard CHD (myocardial infarction and coronary death). As I mentioned above, we found significant improvements in virtually all risk factors in almost 3,000 patients who went through my lifestyle program in 24 hospitals and clinics in West Virginia, Nebraska, and Pennsylvania. Whole-grain intake and the risk of type 2 diabetes: a prospective study in men. For those simply trying to lose weight or lower their risk factors moderately, less extensive changes may be required. Whole grain consumption improves insulin sensitivity in overweight and obese adults (15). Melinda Wenner Moyer, a contributing editor at Scientific American, is author of How to Raise Kids Who Arent Assholes: Science-Based Strategies for Better Parentingfrom Tots to Teens (G. P. Putnams Sons, 2021). J Am Diet Assoc. You may lose weight and start to attract people to you, but, when they get too close, it may be counterproductive. Dr Atkins advocated substituting simple carbohydrates with high-fat, high-animal protein foods such as bacon, sausage, butter, steak, pork rinds, and brie. 2002;113:30-36. WebWas Dr. Atkins Right? Its hardly surprising that quitting smoking, exercising, reducing stress and dietingwhen done togetherimproves heart health. OBJECTIVE: You start by eating 40 grams of net carbs, 4 to 6-ounce servings of protein and 2 to 4 servings of fat per day. Theres also another issue to consider: Although Ornish emphasizes that his diet is low in fat and animal protein, it also eliminates refined carbohydrates. In contrast, there was a statistically significant reduction in LDL-cholesterol in the Ornish group but not in the Atkins group after one year. Available at: http://www.americaonthemove.org/. 1998;339:12-20. The New York Times Sunday Magazine, July 7, 2002. The abstract clearly states, Respondents aged 5065 reporting high protein intake had a 75 percent increase in overall mortality and a fourfold increase in cancer death risk during the following 18 years. Also, as I wrote in my oped in The New York Times, my colleagues and I have conducted randomized controlled trials that these same diet and lifestyle changes reverse the progression of other common chronic diseases. The other problem with Ornishs antiprotein stance is that he lumps all animal proteins together. But they dont mask the truth; compared with individual studies, they get closer to it. 2001;4:171-177. WHY PEOPLE LOSE WEIGHT ON LOW-CARBOHYDRATE/HIGH-FAT DIETS. To understand better the mechanism of this phenomenon, Breslow and colleagues studied the turnover of HDL apolipoproteins (apo) A-I and A-II in 13 subjects on two contrasting metabolic diets. Ornish D, Hart J. Part of the problem in this and other studies that compare weight loss in low-fat versus low-carb diets (which is the wrong question anyway, because its the type of fats and carbs) is that adherence to different diets is often suboptimal, so its hard to make meaningful comparisons. A receptor-mediate pathway for cholesterol homeostasis. On August 12, 2010, after 16 years of review, the Centers for Medicare & Medicaid Services began providing Medicare coverage for my intensive lifestyle program for reversing heart disease under a new benefit category, intensive cardiac rehabilitation. Many insurance companies are also providing coverage. Outcomes were assessed at months 0, 2, 6, and 12. Hemorheologic effects of a short-term ketogenic diet. In March 1998 he partnered with ConAgra Foods to release a line of vegetarian foods. WebIn this study, premenopausal overweight and obese women assigned to follow the Atkins diet, which had the lowest carbohydrate intake, lost more weight and experienced more Fleming R, Boyd LB. Most Americans consume a diet high in saturated fat and cholesterol, so those who are able to increase HDL-C in response to this diet are at lower risk than those who cannot, since they will be more efficient at metabolizing excessive dietary fat and cholesterol. In educating patients in an evidenced-based practice, it may be helpful to summarize an optimal diet as one that is high in good carbohydrates (complex carbohydrates), good fats (n-3 fatty acids) (62), and good protein (plant based) and low in ones that are less healthful. Moyers article only adds to that confusion. In addition to giving up smoking and fatty foods, the test subjects did yoga, meditated, and participated in a support group. Atkins R, Ornish D. Cardiology Crossfire. American College of Cardiology 50th Annual Scientific Sessions, Orlando, FL, March 20, 2001. 2002;40:265-274. Ornish said that the Atkins diet contributed to his impotence and poor breath. They lost 24 pounds during the first year and kept off more than half of that weight 5 years later and had 2.5 times fewer cardiac events than the control group. 1961;16:407-415. Explain the scientific basis of each author's position. Ornish eventually received a bachelors degree in humanities (1975) from the University of Texas at Austin, graduating first in his class. Weight loss at 12 months was the primary outcome. The impact of protein intake on renal function decline in women with normal renal function or mild renal insufficiency. When people dutifully cut down on fat in the 1980s and 1990s, they replaced much of it with high-sugar and high-calorie processed foods (think: Snackwells). The Ornish and Zone books suggest some stimulus-control strategies but on the whole do not emphasize behavior modification, whereas both the Atkins and LEARN Taubes G. What if its all been a big fat lie? Thus, we need to move beyond simplistic notions that anything that raises HDL-C is beneficial and anything that lowers HDL-C is harmful. (Also: the heavy protein consumers in the study were consuming nearly 30 percent more protein than the average American does.) which types of nerves carries stimuli away from the brain?, In planning his fitness goals, Alonso wants to make sure that he improves his fitness without pushing himself too hard too fast. (1980) in internal medicine from Baylor College of Medicine in Houston. Presented at the American Heart Association Annual Scientific Sessions, Orlando, FL, 2003. 2002;5:110-118. Dr. Atkins' Diet Revolution, first published in 1972 Dr. Robert C. Atkins, cardiologist Achieve a "metabolic advantage" with a four-phase diet low in carbohydrates He should know better. That year Ornish also founded the nonprofit Preventive Medicine Research Institute (PMRI) in nearby Sausalito. Dr. David Perlmutter is on the cutting edge of innovative medicine that looks at all lifestyle influences on health and illness. There are so many other factors. In his lengthy reply to my article Dean Ornish says I distort his beliefs, cite questionable studies and dont have the clinical experience to assess nutritional evidence. But the research he cites to back up his oped claims is tenuous at best. And although no one likes to be falsely accused that almost everything they say is wrong, the bigger concern I have is that people who otherwise might have been motivated to make these highly beneficial diet and lifestyle changes may be discouraged from doing so by reading this essay by Ms. Moyer in which, unfortunately, almost everything she writes about my work is wrong. In: Harrisons Principles of Internal Medicine (online), Braunwald E, ed. Westman EC, Yancy WS, Edman JS, et al. Diet, lifestyle, and the etiology of coronary artery disease: The Cornell China Study. They wrote: In any event, I wasnt wrong about this; in my oped I was clear that these benefits were seen in those under age 65. New York: Random House; 1990. WebDean Ornish, in full Dean Michael Ornish, (born July 16, 1953, Dallas, Texas, U.S.), American physician and author whose approach to treating heart disease through radical MAIN OUTCOME MEASURES: For instance, he wrote that animal proteins have been associated with higher disease and mortality risks in observational studies. In contrast, there was a statistically significant reduction in LDL-cholesterol in the Ornish group but not in the Atkins group after one year. Brody J. Therefore, diet-induced changes in HDL-C levels correlate with and may result from changes in apo A-I transport rate. When people go on a high-protein diet, they may lose weight and lower triglycerides if, like most Americans, they had been eating a diet high in simple carbohydrates. This argument raises two interesting points: First, it contradicts Ornishs claim that hes not really against fat, just certain types of fat. Its hard to move the science forward when there are so many stakeholders who say this is the right diet and no other one could possibly be right, Bazzano says. First, in this study, JAMA published a retraction of one of the main conclusions of this study by led by Christopher Gardner, which initially claimed that people lost more weight on the Atkins diet than on the diet I recommend, which turned out to be false (JAMA. The information on this website is intended to supplement, not replace, the advice of a trained health professional. Goldstein JL, Brown MS. Cholesterol and cardiovascular disease. The point here is not that Ornishs dieta low-fat, whole food, plant-based approachis necessarily bad. Am J Clin Nutr. The rivalry between Atkins and Ornish was related to food intake. WebDr, Atkins vs. Dean Ornish and John McDougall - USDA Debate from 2000. Energy density of foods affects energy intake across multiple levels of fat content in lean and obese women. Again, meta-analyses of observational studies are certainly not perfect, but because they analyze all relevant data, they circumvent the problem of cherry-picking. I feel passionately about doing this work because it helps transform peoples lives for the better. It found that individuals assigned to eat high-fat (41 percent calories from fat), Mediterranean-style diets for nearly five years were about 30 percent less likely to experience serious heart-related problems compared with individuals who were told to avoid fat. Could it be that our attempts to reduce fat have in fact been part of the problem? Flavors include Nacho Cheese and Ranch. A food or nutrient can be healthy without requiring that all other foods or nutrients be unhealthy. Last month, an oped in The New York Times argued that high-protein and high-fat diets are to blame for Americas ever-growing waistline and incidence of chronic disease. J Cardiovasc Risk. The other way people get too many calories is by consuming too many simple carbohydrates. Based on his experience caring for patients, Atkins thought that the things that were relegated to the narrow point of the food pyramidmeat, eggs, cream, and cheesewere the healthiest.

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compare and contrast dr ornish and dr atkins