My dad is 78, and was in the Army for 8 years, and dirt-poor growing up. His tragically-single (father ran off) mom had 7 kids. (They would have starved if the Mormon church folk hadn't left gift baskets of food on their porch regularly. His mom ate every other day so the kids could have enough food. Gah! That was pre-welfare obviously.) HE LOVES SOS. With the thick gravy, over potatoes. My stepmom and I cannot fathom what he sees in it. I think it's that to us it's poor-man's food and to him it's childhood "OMG we get FOOD!"
Quote:
RESULTS:
All KD subjects were in nutritional ketosis during the intervention as assessed by daily capillary beta-hydroxybutyrate (βHB) (mean βHB 1.2 mM reported 97% of all days) and showed higher rates of fat oxidation indicative of keto-adaptation. Despite no instruction regarding caloric intake, the KD group lost 7.7 kg body mass (range -3.5 to -13.6 kg), 5.1% whole-body percent fat (range -0.5 to -9.6%), 43.7% visceral fat (range 3.0 to -66.3%) (all p < 0.001), and had a 48% improvement in insulin sensitivity; there were no changes in the MD group. Adaptations in aerobic capacity, maximal strength, power, and military-specific obstacle course were similar between groups (p > 0.05).
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That is truly excellent.
Now about the randomization etc. To my mind, every diet test, is not just testing the dietary part, they are testing the COMPLIANCE part. Now this is obviously a critical element of any diet -- though it is a *different* part that I feel should be measured separately.
I seldom believe ANY research about what people are truly eating or doing unless there is very tight daily measuring or actual observation going on. If ever there were a group of people less likely to omit info on a "report what you ate this day/week" study than new dieters I don't know who it'd be.
However, there are confounding factors with this. Lowcarb for example is far easier to comply with in terms of hunger and satiety. But it is very difficult for most -- and nearly impossible without herculean willpower for others -- to live in our modern world and eat LC when almost every tiniest thing is absolutely stuffed with carbs. Once we do it for years, we're pretty good on choosing from menus (or fasting for the meal), or getting family to eat LC so we aren't baking bread and and dinner pastas and desserts for the fam while trying to not eat anything, because that's just crazy. There are surely alcoholics who went clean while working as bartender but pretty damn few. But the first period -- which can be years for some -- is a big adjustment.
I used to say trying to LC in the modern world was like "Trying to be Amish in New York." Of course that was a long time ago and the LC, Carnivore, Paleo, Primal, Keto diet explosion on the internet has resulted in a massively easier time of it with expanded menus and support.
Still, I feel like any study that can be affected by compliance usually will be, and that in many respects this is a greater imposition upon the lowcarb part of the study than the highcarb. That's for most studies where people are still in the highcarb world. If everyone were in a lab environment with free feeding, the benefit would go to LC.
Anyway it kind of evens out I imagine but I suspect that if you could have two groups both with close to full compliance, and excluding those who violated it by some %, the LC results would always kick ass comparatively. In this study's case, they measured daily and ensured the LC group were actually IN ketosis, so to me that means they were compliant (close enough to stay keto)... hence the really good results.
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Don't forget one thing though: In her book about the food pyramid, Denise Minger said something like (fuzzy recall) the woman PhD who was responsible for the first US government (well, USDA) food recommendations, admitted that the science recommendations were different, but that the government due to welfare couldn't afford to feed people better, grains are really cheap (and of course the USDA exists to sell them), and so that skewed the "official" recommendations hard in that direction.
The government feeds military personnel, too. I'm sure they do not want to be responsible for buying a great deal more animal protein rather than enough pasta and yeast rolls to make the high-end of bell-curve carb-responders like me just explode. And I bet a ton of their 'food' comes from partnerships with gigantic grain/sugar-food corporations. Literally, a shift to low carb feeding will never happen there, I feel pretty certain.
However, them ALLOWING low-carb as a dietary strategy would be a GREAT thing.
PJ