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nonbel commented on Serum levels of vitamin C and Vitamin D in critically ill Covid-19 patients   sciencedirect.com/science... · Posted by u/nonbel
nonbel · 5 years ago
This is the second study showing vitamin C is depleted in covid patients: https://ccforum.biomedcentral.com/articles/10.1186/s13054-02...
nonbel commented on A combo of fasting plus vitamin C is effective for hard-to-treat cancers in mice   sciencedaily.com/releases... · Posted by u/kn8
evgen · 6 years ago
Since most cancer treatments target fast-replicating cells and the gut is lined with such cells I think you have the arrow of causality backwards in this case.
nonbel · 6 years ago
Obviously I am saying the standard explanation is the one with the causality backwards.
nonbel commented on A combo of fasting plus vitamin C is effective for hard-to-treat cancers in mice   sciencedaily.com/releases... · Posted by u/kn8
firethief · 6 years ago
Really? How many pounds of it do you think you could eat in a day?
nonbel · 6 years ago
> Figure3 shows plasma levels following a 36g dose of liposomal vitamin C, for both subjects. This resulted in peak plasma levels, in the region of 400mML21. A 95% interfractile range (34–114), which contains 95% of the distribution with a mean of 74 corresponds to a calculated standard deviation of 17.4. We note that, under these conditions, an outlier measurement of 400mML21 would correspond to a deviation of 10.3 s with a theoretical p-value of 1.6610213 (i.e. p,0.0000000000001). With this high dose, both subjects exceeded their bowel tolerance, leading to diarrhoea. This intolerance presumably arose from the high intake of phospholipid, without food buffering, in fasting individuals. However, our observations using hourly doses suggest that daily intakes of this magnitude are tolerable without bowel effects, as long as the dose is spread throughout the day. https://www.tandfonline.com/doi/abs/10.1080/1359084080230542...
nonbel commented on A combo of fasting plus vitamin C is effective for hard-to-treat cancers in mice   sciencedaily.com/releases... · Posted by u/kn8
elif · 6 years ago
I would disagree and make the important distinction that many chemo treatment recipients get very thin.

Like saying "I don't have time to take a shower, because my bath takes an hour"

nonbel · 6 years ago
It's interesting that a side effect of pretty much every treatment for cancer is nausea, weight loss, etc. Almost like reduced nutrient absorption is the main mechanism by which the treatments work.
nonbel commented on A combo of fasting plus vitamin C is effective for hard-to-treat cancers in mice   sciencedaily.com/releases... · Posted by u/kn8
mrfredward · 6 years ago
Another commenter pointed out that one of the paper's authors, Valter Longo, has already written a number of books on intermittent fasting. While I think it's great when scientist publish in a form that is more accessible to the public, it's important to note that he was strongly invested in promoting intermittent fasting prior to this research being done, even to the point of selling a $300 mail order diet.

I think the reason this "entirely unexciting" study is getting attention is related to one of its author's having a talent for self-promotion.

nonbel · 6 years ago
You could say that about every preclinical or clinical trial. If no one good at promotion had an interest in the treatment it would never get funded.

Most treatments studied are patented drugs, I never see these types of comments about those.

nonbel commented on Quantum Bayesianism Explained by Its Founder   quantamagazine.org/quantu... · Posted by u/guerrilla
kgwgk · 6 years ago
For a pure state a measurement doesn’t improve our knowledge about the state of the physical system, it changes it (and we get information about the new state). The Bayesian updating applies to mixed states, where there exists “classical” uncertainty while for a pure state the uncertainty is purely “quantum”.

"Quantum measurement is nothing more, and nothing less, than a refinement and a readjustment of one’s initial state of belief. [...] Let us look at two limiting cases of efficient measurements. In the first, we imagine an observer whose initial belief structure ρ = |ψ⟩⟨ψ| is a maximally sharp state of belief. By this account, no measurement whatsoever can refine it. [...] The only state change that can come about from a measurement must be purely of the mental-readjustment sort: We learn nothing new; we just change what we can predict as a consequence of the side effects of our experimental intervention. That is to say, there is a sense in which the measurement is solely disturbance."

https://www.perimeterinstitute.ca/personal/cfuchs/Oviedo.pdf

nonbel · 6 years ago
Thanks, not what I was thinking it sounds like.
nonbel commented on Quantum Bayesianism Explained by Its Founder   quantamagazine.org/quantu... · Posted by u/guerrilla
kgwgk · 6 years ago
But that’s not what qbism is about: a wave function (pure state) doesn’t represent ignorance about a true underlying physical state, it’s a maximally sharp state of belief.
nonbel · 6 years ago
> Regarding quantum states as degrees of belief implies that the event of a quantum state changing when a measurement occurs—the "collapse of the wave function"—is simply the agent updating her beliefs in response to a new experience. https://en.m.wikipedia.org/wiki/Quantum_Bayesianism

You could be right, That is what this sounds like to me though. According to the model there is a 50% chance the coin will land on heads, until you flip it.

nonbel commented on Quantum Bayesianism Explained by Its Founder   quantamagazine.org/quantu... · Posted by u/guerrilla
wcoenen · 6 years ago
If the wavefunction is assumed to only encode epistemic uncertainty of the observer, then how are phenomena like tunneling explained?
nonbel · 6 years ago
From my reading, they would say some particles are just much more energetic than usual (for some reason we are ignorant of). See the post above about flipping a coin. According to the statistical model we use for coin flips, it is really unlikely to flip 100 heads in a row but not impossible.

u/nonbel

KarmaCake day2592October 17, 2015View Original