Evo said:
Please post the studies that show that these substances are healthy. Or as you put it "nothing wrong" "slathered in butter".
I'm not Dr. Courtney, and I don't wish to pre-empt anything he might say; but this has been thoroughly covered by now & such studies are not hard to find. I took a moment to go back into
Why We Get Fat by Gary Taubes, 2010, who has a large amount of cites for each of his chapters; in particular I would recommend consulting the references for Chapter 18 of that book, which examines studies comparing diets with various ratios of protein, fat, and carbs. E.g. this is one of many cites from that chapter:
Gardner, C. D., A. Kiazand, S. Alhassan, et al. 2007. “Comparison of the Atkins, Zone, Ornish, and LEARN Diets for Change in Weight and Related Risk Factors Among Overweight Premenopausal Women: The A TO Z Weight Loss Study, a Randomized Trial.” Journal of the American Medical Association. Mar 7;297(9):969– 77.
For those who've never tried Atkins, his diet plan is indeed "slathered in butter" in addition to being low-carb. Link to full text of the study is http://jamanetwork.com/journals/jama/fullarticle/205916, including downloadable PDF. Here is the abstract; I have formatted the key conclusion in colored text so it stands out:
Context Popular diets, particularly those low in carbohydrates, have challenged current recommendations advising a low-fat, high-carbohydrate diet for weight loss. Potential benefits and risks have not been tested adequately.
Objective To compare 4 weight-loss diets representing a spectrum of low to high carbohydrate intake for effects on weight loss and related metabolic variables.
Design, Setting, and Participants Twelve-month randomized trial conducted in the United States from February 2003 to October 2005 among 311 free-living, overweight/obese (body mass index, 27-40) nondiabetic, premenopausal women.
Intervention Participants were randomly assigned to follow the Atkins (n = 77), Zone (n = 79), LEARN (n = 79), or Ornish (n = 76) diets and received weekly instruction for 2 months, then an additional 10-month follow-up.
Main Outcome Measures Weight loss at 12 months was the primary outcome. Secondary outcomes included lipid profile (low-density lipoprotein, high-density lipoprotein, and non–high-density lipoprotein cholesterol, and triglyceride levels), percentage of body fat, waist-hip ratio, fasting insulin and glucose levels, and blood pressure. Outcomes were assessed at months 0, 2, 6, and 12. The Tukey studentized range test was used to adjust for multiple testing.
Results 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<.05). Mean 12-month weight loss was as follows: Atkins, −4.7 kg (95% confidence interval [CI], −6.3 to −3.1 kg), Zone, −1.6 kg (95% CI, −2.8 to −0.4 kg), LEARN, −2.6 kg (−3.8 to −1.3 kg), and Ornish, −2.2 kg (−3.6 to −0.8 kg). Weight loss was not statistically different among the Zone, LEARN, and Ornish groups. At 12 months, secondary outcomes for the Atkins group were comparable with or more favorable than the other diet groups.
Conclusions In 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 favorable overall metabolic effects at 12 months than women assigned to follow the Zone, Ornish, or LEARN diets. While questions remain about long-term effects and mechanisms, a low-carbohydrate, high-protein, high-fat diet may be considered a feasible alternative recommendation for weight loss.
Granted this just a single study; and granted too, the book is by now 7 years old, so likely there are more recent studies out there; regardless, my impression is that such views have steadily gained support. I have another extremely well-sourced book on high carb vs. low carb diets that I could go through as well; but I think I've given a sufficient start here that people can look up further studies on their own if they are really interested.
Please note also that the issue isn't merely processed sugar, as reading only the title of of the article referred to by Dr. C in his original post might suggest; it's any diet with excessive carbs, particularly refined carbs of the sort Big Ag likes to feed us (e.g. refined wheat and corn in addition to all that high-fructose corn syrup; and also various "gluten-free" refined carb products that are just as bad). BTW, this also means that although eggs and butter and saturated fat in general are okay in a low-carb diet, they are
not okay when combined with excess carbs. So although a daily breakfast of eggs & bacon is most likely fine (provided you're not allergic to eggs), a daily breakfast of eggs & bacon &
a huge helping of hash browns is not fine at all; unless you are a lumberjack or in training for a marathon you will gain weight; and aside from obesity, for most people their lipids will head south.
To sum up: As a layperson with fairly wide reading in this area, I find that the claim that excess carbs are pernicious, while saturated fat isn't necessarily so, has been sufficiently validated; this is primarily in relation to heart health, separate from the question of micronutrients. Serious diet research has meanwhile expanded into new areas - e.g. the
microbiome and its role in not only gut health but the effectiveness of the immune system. That's certainly where I'm concentrating my own reading on diet these days.