I’m currently reading Trick And Treat – how ‘healthy eating’ is making us ill by Barry Groves. Barry Groves has taken a close look at many studies. Often, the abstracts on the medical journal articles do not agree with what the data presented in the article would indicate. Also, some recommendations have no basis in research. One of those recommendations is the Five a Day advice for fruits and vegetables. Studies have shown that two a week is sufficient to get maximum benefit. I like vegetables enough that I’ll keep eating them anyway. As for fruits, they contain fructose, the most harmful of sugars. Their value is questionable when the nutrition they contain can just as easily be gotten from vegetables. Fructose is the sugar that causes belly fat. Fructose is also the sugar most detrimental to the immune system, though the other simple sugars aren’t far behind. Another source I’ve seen said that fructose is metabolized in the liver the same way that alcohol is, and we know what alcohol can do to the liver. Table sugar and high fructose corn syrup are about half fructose, which makes them dangerous, too. Barry Groves’ site: http://www.second-opinions.co.uk
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Critique of studies on which our “healthy diet” advice is based
I just read Dr. Mercola’s critique of the principal studies on which our “healthy diet” advice is based, The Cholesterol Myths that May be Harming Your Health. It would seem that there’s a lot of misleading information being promulgated.
To start with, Dr. Ancel Keys cherry-picked his cases for the Seven Countries Study back in 1953 when he told us that higher fat intake correlated to higher rates of coronary heart disease. Had he used data from all 22 countries that had data available, no correlation between dietary fats and coronary heart disease would have been found.
Analysis of the Framingham Study showed that lower blood cholesterol levels were associated with a lower cardiac risk. What they did not tell us was that the same study determined that the more cholesterol and saturated fat people ate, the lower their blood cholesterol levels. And yet we were told to lower our cholesterol and saturated fat intakes.
And finally, while the “MrFit” Study did show a marginal decrease in coronary heart disease for those who ate a low-saturated fat and low-cholesterol diet, there was an increased all-cause mortality rate for those who followed such a diet with an increase in deaths from cancer, brain hemorrhage, suicide, and violent death.
The HCG Diet
There’s a page that lists the articles and research on the HCG Diet published in medical journals. It’s here. The FDA does not endorse the diet. HCG is not approved for weight loss; however, doctors are permitted to use drugs approved for other purposes as they choose. The HCG Diet is very strict and unforgiving of cheats. It takes tremendous dedication to follow this diet. Supposedly, the reward is, if followed through the stabilization phase, that one’s metabolism is reestablished so that one does not gain the weight back.
High-fat diet best for weight loss
There was a study done in 1956 comparing weight loss on diets of differing macronutrient content. The diets were all 1,000 calories. One was 90% carbohydrate, another was 90% protein, another was 90% fat, with the last being a mixed diet. Those on the 90% fat diet lost the most weight, with those on the 90% protein diet coming in as a close second. Those on the 90% carbohydrate diet lost the least, and some of those even gained weight.
Reference:
A. Kekwick M.A., M.B. Camb., F.R.C.P. , G.L.S. Pawan B.Sc. Lond. Calorie intake in relation to body-weight changes in the obese. The Lancet, Volume 268, Issue 6935, Pages 155 – 161, 28 July 1956.
Does the American Heart Association know about these studies?
I continue to read Natural Health & Weight Loss by Barry Groves. I am currently reading about fats.
A study was done in 1965 by Rose GA et al to assess survival rates in patients eating different fats and oils. In this study, patients who had already had a heart attack were assigned to one of three groups. These were given polyunsaturated corn oil, mono-unsaturated olive oil or saturated animal fats respectively. Blood cholesterol levels were lowered by an average of 30% in the polyunsaturated group, while there was no change in the other two groups. At first sight, therefore, it seemed that men in the polyunsaturated group had the best chance of survival. However, at the end of the trial only 52% of the polyunsaturated group were still alive and free of a second heart attack. Those in the mono-unsaturated group fared little better: 57% survived and had no further attack. But the saturated animal fats group fared the best with 75% surviving and without a further attack.
There was also a Finnish trial published in 1985 by Miettinen TA et al in which middle aged men were given interventions such as instruction on diet, smoking, and exercise and were also treated for high blood pressure and cholesterol when present. The control group was given no such interventions. At the 15-year follow-up, there were 67 total deaths and 34 heart disease deaths in the intervention group. In the control group, there were 46 total deaths and 14 heart disease deaths.
Would it be fair to say that we are being given bad advice where it relates to heart health?
References:
Barry Groves. Natural Health & Weight Loss, 2007.
Rose GA, Thomson WB, Williams RT. Corn oil in treatment of ischaemic heart disease. Br Med J. 1965 Jun 12;1(5449):1531-3.
Miettinen TA et al. Multifactorial Primary Prevention of Cardiovascular Diseases in Middle-aged Men, JAMA. 1985;254(15):2097-2102.
More reasons not to eat whole grains
I’ve known for some time that grains don’t work well for me. I was reading a Paleo Diet newsletter today and discovered another reason not to eat them. Apparently, they are associated with deficiency diseases.
Whole Grain Cereals and Vitamin D Metabolism
Nutritional scientists have known forever and a day that excessive consumption of whole grain cereals severely impairs vitamin D metabolism and can lead to the bone disease, rickets[16]. In fact, as far back as 1918, before vitamin D was discovered, a scientist in England by the name of Mellanby routinely induced experimental rickets in puppies by feeding them an oat diet[17]. Epidemiological studies of human populations consuming high levels of unleavened whole grain breads show vitamin D deficiency and rickets to be widespread[18-20]. A study of radio-labeled vitamin D in humans consuming 60g of wheat bran daily for 30 days clearly demonstrated an enhanced elimination of vitamin D in the intestines[21].
16. Cordain L. Cereal grains: humanity’s double edged sword. World Rev Nutr Diet 1999; 84:19-73.
17. Mellanby E. The part played by an “accessory factor” in the production of experimental rickets. J Physiol (London) 1918;52:11-14.
18. Gibson RS, Bindra GS, Nizan P, Draper HH: The vitamin D status of east Indian Punjabi immigrants to Canada. Brit J Nutr 1987; 58:23-29.
19. Brooke OG, Brown IRF, Cleeve HJW: Observations of the vitamin D state of pregnant Asian women in London. Brit J Obstet Gynaecol 1981;88:18-26.
20. Hunt SP, O’Riordan JLH, Windo J, Truswell AS: Vitamin D status in different subgroups of British Asians. Br Med J 1976;2:1351-54.
21. Batchelor AJ, Compston JE: Reduced plasma half-life of radio-labeled 25-hydroxyvitamin D3 in subjects receiving a high fiber diet. Brit J Nutr 1983;49:213-16.