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EatAnother "Healthy Heart Guide" that got it wrongIt is so disheartening. Following in the footsteps of the flawed American food guide, and the recently revised and still misguided Canadian food guide, I just looked through the "New Healthy Heart Handbook for Women" put out by the National Heart, Lung and Blood Institute, and although parts of the guide look good, the dietary advice continues to be hugely problematic. This is the same dietary advice that we've been following for years, and it obviously isn't working! I can't believe that the powers that be are still promoting a diet that increases the insulin response in the body, and causes inflammation! I would have thought that by now it was common knowledge that high blood insulin levels cause arteries to clog much faster than low insulin levels! That is why diabetics are at higher risk for heart disease. So why is it that they are recommending the most servings of the type of food that causes the biggest insulin response? 6 to 8 servings of grains???? Not only that but they are suggesting bread and pasta, which are made of flour, thereby increasing the glycemic response further! This is madness. It is important to remember that in pre-industrial times when there was no heart disease, fruit, grains and veggies were not available during the cold months. Most people ate a meat, dairy, and/or seafood based diet for several months of the year, supplementing with carbs that were dried or fermented from summer. It was only in the warmer months when veggies, fruit and grain were available. It is worth noting that in pre-industrial times no one ate vegetable oils like corn, soy, canola, safflower etc.! No vegetable oils, very limited sugar, no heart disease. Hmm...
The handbook is once again suggesting that polyunsaturated omega 6 vegetable oils are "healthy fats". Yet by definition these oils are extremely sensitive to heat and light, oxidize readily making them rancid. We need to treat all vegetable oils like flax oil is treated - unrefined, in a dark bottle and kept in the fridge. But no, vegetable oils are on store shelves rather than in the fridge, frequently in clear glass bottles, and worst of all, they are for the most part refined. That means they were heated in the processing! That means they are rancid! They are deodorized and bleached and then sold to consumers as "healthy fats". So, we consume these oxidized fats, resulting in a ton of free radicals damaging our bodies. Great idea. No wonder our bodies get inflamed! Furthermore, omega 6 oils are known to promote inflammation through use of the Cox 2 pathway. Inflammation is an integral part of cardiovascular disease. So eat omega 6 vegetable oils and then take Cox 2 inhibitors to deal with the inflammation? Makes no sense to me. I agree with the handbook's advice not to eat trans fats. Trans fats are absolutely awful for us and definitely promote heart disease. But once again, saturated fats and cholesterol are painted with the same brush. Cholesterol goes up when there are a lot of free radicals in the body, because it is an antioxidant. Stop eating rancid vegetable oils and artificial food, and probably cholesterol levels won't need to be so high. I won't repeat my posts on saturated fat and cholesterol here, but suffice it to say that promoting low-fat dairy is misguided. Low-fat dairy = high sugar dairy (lactose) = big insulin response = clogged arteries. One does not need to fear saturated fat and cholesterol. They are in nutrient-dense foods, are part of a healthy diet, and play a critical role in slowing the release of sugar from carbs into the blood stream thereby helping to regulate insulin levels. But one does need to choose high quality fats from free range or pasture-fed animals. Extra-virgin olive oil from the first cold pressing is also a very healthy fat, although it can't take high heat unless mixed with butter or ghee. The final piece is to learn one's metabolic type, so that you know what ratio of above-ground veggies, protein and fat to consume for your biochemical individuality. I am not suggesting that everyone needs to eat a high protein, high fat, low carb diet. Some people do well on 60 to 70% above ground veggies, with a little bit of protein and fat. Do the test, and find out what ratio is right for you. Related Posts Sugar: the disease generator Blood-sugar regulation Saturated fat: the misunderstood nutrient Fats: the good, the bad and the ugly High Cholesterol does not cause heart disease "New Healthy Heart Handbook for Women" put out by the National Heart, Lung and Blood Institute Zavoroni and others. Risk factors for coronary artery disease in healthy persons with hyperinsulinemia and normal glucose tolerance New Eng J Med, 1989, 320:702-6 Liu S, Willett WC, Stampfer MJ, Hu FB, Franz M, Sampson L, Hennekens CH, Manson JE. A prospective study of dietary glycemic load, carbohydrate intake, and risk of coronary heart disease in US women. American Journal of Clinical Nutrition 71(6):1455-61, June 2000. J. Jeppesen and others. Effects of low-fat, high-carbohydrate diets on risk factors for ischemic heart disease in post-menopausal women. Am J Clin Nutr, 1997; 65:1027-1033. Salmeron J, Manson JE Stampfer MJ, Colditz GA, Wing AL, Willet WC Dietary fiber, glycemic load, and risk of non-insulin-dependent diabetes mellitus in women Journal of the American Medical Association 277(6):472-7, Feb 12, 1997. Bryhni B, Jenssen TG, Olafsen K, Eikrem JH Age or waist as determinant of insulin action? Metabolism 52(7):850-7, July 2003. Jarvi AE, Karlstrom BE, Granfeldt YE, Bjorck IE, Asp NG, Vesby BO Improved glycemic control and lipid profile and normalized fibrinolytic activity on a low-glycemic index diet in type 2 diabetic patients Diabetes Care 22(1):10-18, Jan. 1999. Juntenen KS, Niksanen LK, Liukkonen KH, Poutanen KS Holst JJ, Mykkanen HM Postprandial glucose, insulin, and incretin responses to grain products in healthy subjects American Journal of Clinical Nutrition 75(2):254-62, Feb. 2002. Schwartz JM, Lilnfoot P Dare D, Aghajanian K, Hepatic de novo lipogenesis in normoinsullinemic and hyperinsulinemic subjects consuming high-fat, low carbohydrate and low-fat, high carbohydrate isoenergetic diets American Journal of Clinical Nutrition 77(1):43-50, Jan. 2003. Wiley-Rosette, Judith et al: Carbohydrates and Increases in Obesity: Does the type of Carbohydrate make a difference? Obesity Research, 12, Supplement 2, 124S, 2004. Bray, George et al. Consumption of high fructose corn syrup in beverages may play a role in the epidemic of obesity. American Journal of Clinical Nutrition Vol. 79, no. 4, p. 537-543, April 2004. Brasco, Joseph MD. Online at Low Carbohydrate Diets 2000 Mensink and Katan Effect of dietary fatty acids on serum lipids and lipoproteins: a meta-analysis of 27 trials. Arterio Thromb, 1992, 12:911-9 Enig, Mary; Know Your Fats: The Complete Primer For Understanding the Nutrition of Fats, Oils, and Cholesterol Bethesda Press, Silver Spring, MD, 2003. Online by Mary Enig, PhD, fats, oils and lipids researcher The importance of saturated fats for biological functions Online by Mary Enig, PhD, fats, oils and lipids researcher Fats and Oils and their impact on health Soriquer F. et al. Hypertension is related to the degradation of dietary frying oils Am J Clin Nutr Dec;78(6):1092-7, 2003. Yam, D et al. (1996) "Diet and Disease - The Israeli Paradox: Possible dangers of a High Omega-6 poly unsaturated fatty acid diet." Isr. J Med Sci; 32:1134-1143. J Clin Endocrinol Metab August, 1998;83:2773-2776 Rosedale, Ron MD. and Colman, Carol The Rosedale Diet Harper Collins NY, 2004 back to top Copyright 2007 Vreni Gurd |