You may be technically correct, but what’s the point of this comment?
For as long as he is alive, he will have less range of motion in his right wrist than his left, barring advances in nanotechnology bone reconstruction or something.
Millions of years from now, when his body has broken down into petrochemicals, I suppose that yes, his wrist will then have a greater range of motion then it does now.
> For as long as he is alive, he will have less range of motion in his right wrist than his left, barring advances in nanotechnology bone reconstruction or something.
If that is his attitude - and the attitude of everyone around him - then that will likely be the case.
In 'reality' - whatever that means to you - plenty of folks have demonstrated that the body is malleable.
There was a bunch of little stuff. I don't think it was as bad as the flu, but it was somewhat uncomfortable.
The initial symptom was wanting to eat all of the time, even if I wasn't hungry. My brain was convinced that I had to spend huge chunks of my time chewing on something flavorful.
So I sliced off some very flavorful cheese and nibbled little tiny pieces during the morning. That seemed to work. Note that I avoided all artificial sweeteners. There's some danger there that I felt I should avoid.
Eating a bunch of cheese leads to constipation. Some fiber every morning fixed that.
There were a few other things. My energy level dropped right off, then came back. Now I have much more energy than when I started. I had a little bit of brain fog, but it was manageable.
The biggest thing I've found about keto is that my personality changes. I am much more relaxed and sedate than I used to be -- more on an even keel. That's not necessarily a benefit. It was just unexpected.
ADD: The crazy thing about keto, as opposed to just IF, is that you have to be really OCD about what you eat. Manufacturers sneak carbs into everything. A food journal was critical for me -- and it was something I felt I didn't have to do, since I already knew so much about nutrition! Good thing my SO talked me into doing one.
It's insane. You go buy beans, and there's rice flour in it. You buy salmon, and there's sugar in it. It's beyond ridiculous, and explains so much about rising levels of obesity. Anything even vaguely processed has a lot of unnecessary carbs added, for one reason or another.
I've had it. A few days of very low carb intake leave me feeling very low-energy, foggy, and crabby. It's more of an issue if I'm also too calorie restricted, so if your goal is weight loss, I'd recommend starting Keto first with a similar number of calories to your existing diet, then restricting calories once you're past the adjustment phase.
I had it the first time I switched my diet. Headache, low energy, mild body-ache.
I'm currently a non-strict keto-er, which means I'm really just a high-fat, low carb eater. I think consensus on 'keto-flu' is really just that when you're flushing all the glycogen, it's taking with it a lot of water, and it's upsetting your sodium/potassium levels, I don't really know. I just know that I don't suffer from it when I transition from periods of moderate carbs back to low carbs.
It should be over in two days. Carb withdrawl makes you a little more tired. After that, you should even out -- no more crashes and highs -- to a constant level of good focus and energy. You do need to bump your fat and protein intake, first to avoid the addiction eating by actually being full, and second to provide energy. After a couple days you switch to burning fat instead of burning sugars.
For me it was very similar to the early stages of a bad flu. Tired, headaches, body aches, irritable, and mild nausea for about 5 days. I've heard that MCT oil can ease the transition a bit, but be careful because too much can cause stomach cramps and violent diarrhea. (I've never been able to handle more than one tablespoon at a time.)
I'm 6 weeks into a keto diet, haven't been over 20g of carbs a day throughout. Sleep is much deeper, but I feel I need to sleep longer.
First few weeks (in particular) I had to drop my weight amounts in the gym and found (fighting in) martial arts I tired quicker. Helped this with BCAAs and cream in my coffee prior to exercise (prior to this, my first meal wouldn't be until ~2pm and I'd exercise in the morning fasted). I suspect MCT oil would also help? Also struggled with low blood pressure/headrush when standing up quickly. Helped this with dioralyte and increasing my salt intake. Other than that, it's been good.
Pretty amazing diet really. Far, far leaner, no energy dip in the afternoon, and I'm far less bloated and uncomfortable. Although that's possibly because my diet seems to be a bit more FODMAP friendly. Interesting experiment, either way.
Keto is not exactly compatible with anaerobic exercise. If you're lifting or performing a mix of aerobic and anaerobic (e.g. running / sprinting intervals), your muscles still need some glucose. I'd suggest checking out the cycling ketogenic diet (carb cycling) - it will allow you to refuel your muscles' glycogen stores, allowing anaerobic exercise (weight lifting, etc) while maintaining ketosis 99% of the time (staying lean). Also check out alpha lipoic acid supplements, it will increase the ratio of glucose provided to your muscles vs fat storage during your carb load. Go get ripped :)
Keto and IF can be very dangerous if you don't know what you're doing. I'd suggest getting regular blood testing with your doctor while adjusting and figuring out your routine and meal plans.
> So the brain is happily deriving energy from ketones – sure, but why would this be protective against such a variety of brain diseases?
> One answer may be energy. Despite their superficial differences, many neurological diseases share one major problem – deficient energy production. During metabolic stress, ketones serve as an alternative energy source to maintain normal brain cell metabolism. In fact, BHB (a major ketone) may be an even more efficient fuel than glucose, providing more energy per unit oxygen used. A ketogenic diet also increases the number of mitochondria, so called “energy factories” in brain cells. A recent study found enhanced expression of genes encoding for mitochondrial enzymes and energy metabolism in the hippocampus, a part of the brain important for learning and memory. Hippocampal cells often degenerate in age-related brain diseases, leading to cognitive dysfunction and memory loss. With increased energy reserve, neurons may be able to ward off disease stressors that would usually exhaust and kill the cell.
> Although the cellular and molecular mechanisms by which IF enhances cognitive and motor performance have not been established, the shift to ketone utilization appears to be one of the key biological mechanisms that prevents age‐related reductions in brain white matter integrity and preserves spatial memory
Wait I might have to dig up the sources. But it is generally accepted in the “Keto sphere” that the brain runs on glucose. Even in ketosis the body creates some glucose for this purpose.
I don't have sources handy, but IIRC the brain will generally to run on about a 60/40 or 70/30 mix of ketones/glucose, but in some experiment they gave people in ketosis a does of insulin to drop their blood sugar to near 0, and they didn't pass out and were otherwise fine.
That's an interesting point, but I only think it's true under the correct assumptions. If we assume that all bodies are more or less interchangeable, then yes. You'd want to look at large scale, repeatable studies that tie diet into health outcomes, and just follow those.
If, however, there is a large amount of variation among human bodies, large scale objective studies may not hold much value for any particular individual. In that case, the proper bounds of the experiment might be one person, or a small group of similar people. In that case, trying various experimental diets and observing the effects is quite scientific, even if not universal.
Well I imagine what OP meant was that the testing phase in this "science" is not verifiable/repeatable/etc. Perception is an awful way to perform tests, and is very frequently wrong.
