seems to be becoming more and more “scientifically” clear that brains run better on ketones, and burning fat is cleaner for the body
> 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.
https://blogs.scientificamerican.com/mind-guest-blog/the-fat...
> 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
I’d recommend trying interesting diets for yourself, to validate the claimed short run effects.
Hypothesis: [Specific diet] will cause no effects on myself, given my unique biochemicalpsycho makeup.
Hypothesis: [Specific diet] will cause [list of benefits/mali] for myself, given my unique biochemicalpsycho makeup.
etc.
Just because it doesn't automatically apply to the population at large does not make it "not science".
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.