"Given the rate at which bacteria evolve, I've implemented a strategy for pushing them in a healthy direction. It basically amounts to mixing probiotics and low-sugar yoghurt with unappetizing superfoods such as brocolli, eggs, coconut oil, under cooked sweet potatoes, etc. The idea is that most of these guys are addicted to sugar or simple carbs because that's their transport medium between the factory and me. So I need to put them into a metabolic crisis in which the only survivors will be the ones who learn to love these awful superfoods. Subsequently, given enough time, I would expect them to evolve ways to mess with my hormonal feedback loops so that I crave these foods and ignore SAD ones."
Are you sure that you are getting what you expect from the Sweet Potato portion? I thought that raw or cooked they have a high Sucrose, and Glucose level. They do have several grams of fiber.
I wanted to have Sweet Potatoes as part of my diet, but over many tests, they spike my post postprandial blood glucose about 10% higher than if I eat a similar amount of carrots. Up to about 115 as compared to about 105. (I am not suggesting carrots) Cooked and cooled converted white rice also brings me up less than Sweet Potatos, but I discontinued that. This is with keeping other Carbs low and eating with various fats, Ghee, Beef and EVOO. I also tried Butternut Squash with similar results. Your Yogurt could be feeding the Lactic Acid bacteria, and the thought seems to be that the Lactic Acid might helpfighting some bad bacteria.
Well isn't that the trouble with Alzheimer's research... everything feeds into it.
So the one thing I've mostly given up on, having tried several supposedly very healthy diets, is attempting to use logical arguments to justify my food selection, as opposed to plain old data. Glucose is bad. Spiking blood sugar is also bad. But sweet potatoes (especially those with purple meat) are well correlated to longevity in Okinawans and Westerners. I've come to appreciate just how feeble macronutrient analysis actually is; healthy foods are ultimately a positively biased combination of protective and destructive components. The net effect is virtually impossible to predict. (Just look at the wide smattering of foods in the supercentenarian diet data that I posted, or more comprehensive data sets such the various Okinawan diet papers available online.) Epidemiology does not prove causality, but it increases the probability of a causal relationship, so I'm afraid it's the best data we'll have for a few centuries yet. I never would have thought, for instance, that drinking copious amounts of fat, or engaging in light smoking, would be healthy activities, for instance, but they appear to be.
So, yes, simple carbs are bad. But food isn't a "carb" unless it's made in a factory. It's a food, consisting of millions of different molecular species. This is where the keto fanatics go off the rails. Generally speaking, they're so obsessed with the evils of glucose metabolism that they forget the benefits of phytochemicals, trace minerals, gut bacteria, and other factors involved with converting food into bioavailable nutrtition. They are on the right track; indeed, my own data suggests that the ketogenic diet is moderately more life extensive than the vegan diet, but the oldest people still eat sugary chocolate, for instance. Presumably, there's a way to combine keto with veganism to achieve an even healthier life...
Speaking of data, cut out the beef. None of my supercentenarians reported eating it on a regular basis. If you really want excess iron (so you can nucleate more anyloid aggregates?), go for Chilean mussels. Same with ghee: these folks don't seem to eat butter, which is ostensibly healthy but perhaps suffers from excess phosphates. I can't argue with EVOO, though. More actually does seem to be better, in that case.
As to yoghurt, I'm not much of a fan. It contains high phosphates, and as you pointed out, it's a acidic food, which is bad (unless we're talking citrus fruits). And perhaps worst of all, it's a concentrated protein source. I only use it to ramp up gut bacteria after a course of antibiotics.
