It's fairly clear at this point that many diseases are associated with a high fat diet
No. It's not.
The entire hypothesis that saturated fat caused heart disease was based on a FRAUDULENT STUDY!
There have been several recent studies trying to prove once and for all that saturated fat is unhealthy that have shown the opposite. Saturated fat (not hydrogenated, but plain old natural saturated fat) is NEEDED by the body. We evolved eating saturated fat over millions of year. The idea that it kills us is just silly from the get go.
"In one such study published in the European Journal of Clinical Nutrition, the proportion of calories contributed by fat was found to range from 25 47 per cent across 18 countries. However, this wide variation in fat intake appeared to have no bearing on body weight in men. Even more surprising was the finding that, in women, higher levels of fat consumption were clearly associated with a reduced risk of excess weight. "
http://www.drbriffa.com/2006/10/02/is-saturated-fat-really-that-bad/
"During 523 y of follow-up of 347,747 subjects, 11,006 developed CHD or stroke. Intake of saturated fat was not associated with an increased risk of CHD, stroke, or CVD. "
http://www.ajcn.org/cgi/content/abstract/ajcn.2009.27725v1
"putting people on unpleasant low-fat diets didnt help them live any longer nor avoid another heart attack. Over the course of the study, the same number of subjects died in both groups."
http://www.proteinpower.com/drmike/...ed-fat-and-heart-disease-studies-old-and-new/
Also, if the calories in/calories out thing were really true, I would have been a super model. Along with being a vegetarian, I did calorie counting and calorie restriction along with exercise for years. I got fatter and sicker the whole time. Calories from different macronutriyents have different effects on the body. Carbohydrates raise blood sugar which raised insulin which leads to fat storage. Saturated fat makes you feel full and does not raise insulin so you do not go in to fat storage mode. A meat free, high whole grain diet is a DISASTER for many and that is what is being pushed. The science does NOT back up a high grain diet as a healthy way of eating. Remember, lots of grains are what is used to fatten cattle.
"Over the past five years, however, there has been a subtle shift in the scientific consensus. It used to be that even considering the possibility of the alternative hypothesis, let alone researching it, was tantamount to quackery by association. Now a small but growing minority of establishment researchers have come to take seriously what the low-carb-diet doctors have been saying all along. Walter Willett, chairman of the department of nutrition at the Harvard School of Public Health, may be the most visible proponent of testing this heretic hypothesis. Willett is the de facto spokesman of the longest-running, most comprehensive diet and health studies ever performed, which have already cost upward of $100 million and include data on nearly 300,000 individuals. Those data, says Willett, clearly contradict the low-fat-is-good-health message ''and the idea that all fat is bad for you; the exclusive focus on adverse effects of fat may have contributed to the obesity epidemic.'' "
http://www.nytimes.com/2002/07/07/magazine/what-if-it-s-all-been-a-big-fat-lie.html