Kamil Pabis

Karma: 51

Kamil Pabis 28 Apr 2024 6:00 UTC
6 points
0
on: So What’s Up With PUFAs Chemically?
While I agree with the logic of avoiding subjecting highly unsaturated oils to heat we do have to be cautious here with speculation.
When you say things like that: “Nonetheless, if these things are poisonous at high concentrations, they’re probably not great at low concentrations.”

It does not clearly follow that such a dose-response exists. The word “hormesis” gets thrown around a lot in the lay press, and there is actually some truth there. Plenty of moderate (even genotoxic) stressors have health benefits at lower doses. Of course, I would not gorge on lipid hydroperoxide based on this, because we have better evidence-based “hormetic” stressors, but it also does not follow that lipid oxidation products at low doses are harmful.

Kamil Pabis 1 Feb 2024 3:00 UTC
3 points
0
on: Per protocol analysis as medical malpractice
If the treatment is relatively mild, the dropouts are comparable between groups then I am not sure that per protocol will introduce much bias. What do you think? In that case it can be a decent tool for enhancing power, although the results will always be considered “post hoc” and “hypothesis-generating”.
From experience I would say that intention-to-treat analysis is the standard in large studies of drugs and supplements, while per protocol is often performed as a secondary analysis. Especially when ITT is marginal and you have to go fishing for some results to report and to justify follow-up research.

Kamil Pabis 29 Jan 2024 10:40 UTC
1 point
0
in reply to: CronoDAS’s comment on: Surgery Works Well Without The FDA
The supplement industry and similarly the cosmetics industry is a jarring example of what can happen with no oversight or the wrong kind of oversight. Although, to be charitable to the libertarian position, one can argue that many supplement and cosmetics companies are forced to provide inferior products since efficacious products, even when rather safe, cannot be sold on the free market for various reasons (e.g. higher doses of potassium or retinoids for photoaging).

Kamil Pabis 20 Jun 2023 4:09 UTC
1 point
0
on: Adventist Health Study-2 supports pescetarianism more than veganism
Thank you for the write-up! Just as a minor quibble, veganism has not been considered the “healthiest choice” ever, or at least not for a long time, if I were to make a guess about “consensus” in the field. While it has been clear for a while that a diet biased towards plants is healthy, the data for the addition of certain food groups (fatty fish, fermented and low-fat dairy, etc) is pretty strong as is the data for the health benefits of individual carninutrients (creatine or even taurine).
As you correctly point out, the issue of residual confounding is unsolvable. All we can take from these studies are hints and ideas. The recent failure of Vitamin D to live up to the hype, initially generated by observational studies, is a case in point.
I am particularly weary of studies of dietary patterns, whether they are vegetarian or Mediterranean or others, since I would expect to see the strongest biases here (because these patterns are associated with lifestyles, class, belief etc). Nevertheless, studies on surrogate endpoints like cholesterol and studies on single food groups do support the whole idea of reducing meat consumption.

Kamil Pabis 4 Jun 2023 8:11 UTC
3 points
0
on: Change my mind: Veganism entails trade-offs, and health is one of the axes
I think the consensus among nutritionists is that a well-planned vegan diet is among the healthiest possible diets. Almost everyone in the US would benefit from “going a bit more vegan”. Nevertheless, it is probably not optimal on certain axes.
It would seem that the best diet to improve long-term health is a flexible pescolacto-vegetarian diet supplementing certain carninutrients, e.g. creatine. So not vegan.
Tradeoffs are real and you have to optimize for one thing over another. For example, a standard (unsupplemented) vegan diet may not be optimal for mental and physical performance due to the higher risk of iron deficiency, low protein intake and lack of dietary creatine intake, among other things. A lot of those issues can be alleviated through careful planning. However, it may very well be that low-moderate intakes of protein and iron are one of the reasons why a vegan diet is healthy and you will have to weigh this against the potential performance aspect.
We have two types of evidence in favour of veganism:
We can extrapolate that veganism is healthy from first principles by studying individual foods and nutrients. For example, we know that saturated fat often found in animal foods increases LDL which is a validated marker of cardiovascular disease. Saturated fat intake will be low on a vegan diet. Another example is iron, we know that even unprocessed red meat is problematic because it is a rich source of iron and we know that many men consume too much iron (whereas some women consume too little). We know that iron intake and availability will be lower on a vegan diet and we have relatively strong evidence that elevated iron levels are harmful to health.
Or we can be lazy and just take a bird’s eye view and look at mortality data in observational studies. These studies clearly show that both vegetarian and vegan diets are associated with reduced mortality and superior health outcomes. Unfortunately this kind of study design is subject to different biases like residual confounding, e.g. it may be that vegans are healthier than average even after we controlled for obvious variables associated with health like income, cholesterol, body weight, etc. While this does not prove that veganism is healthy, it definitely shows that veganism is consistent with above-average health outcomes.

Kamil Pabis 16 May 2023 9:00 UTC
2 points
−2
on: Lessons learned from offering in-office nutritional testing
We have to be careful not to offset the health benefits of a vegan diet. There is a surprising amount of evidence suggesting that low-normal iron stores are beneficial and may reduce cancer incidence, mortality and perhaps increase longevity. Specifically, as strongest, I would point out the FeAst study and numerous recent Mendelian randomization studies on iron and longevity (e.g. Daghlas and Gill 2021). It is prudent to test ferritin to know whether you are too low or too high.
Vitamin D testing certainly could be useful, even though recent clinical trials testing vitamin D supplements are between somewhat to highly disappointing, but deficiency is presumably not strongly linked to veganism.

Kamil Pabis 24 Feb 2023 11:12 UTC
4 points
0
in reply to: Gerald Monroe’s comment on: Big Mac Subsidy?
I do not think this is entirely accurate. Lung cancer in smokers hits unusually young people because, well, they are smokers. Heart disease is a disease of old age and accelerating it somewhat through an unhealthy diet would have complex effects. However, making matters even more complicated, ultraprocessed foods also promote cancers and obesity—the latter is definitely a huge healthcare burden which does not kill people immediately.
This is hard to model since there can be a shift from a disease that kills slowly to one that kills quickly and early (dementia to lung cancer), but you can have also the opposite shift (e.g. from a non-disease state to chronic COPD and frailty preceding death).
All we can say for sure is that the harmful effects of smoking and junk food diets may be offset to some extent. More so for smoking than junk food.
Either way, it would appear the consensus is that “in high-income countries, lifetime health care costs are greater for smokers than for non-smokers, even after accounting for the shorter lives of smokers”
https://www.tobaccoinaustralia.org.au/chapter-17-economics/17-2-the-costs-of-smoking

Kamil Pabis 11 Jan 2023 16:54 UTC
1 point
0
in reply to: PhilJackson’s comment on: The Fountain of Health: a First Principles Guide to Rejuvenation
While the term “healthspan” can be useful for public messaging it is not necessary to use it instead of “lifespan” as study after study shows. When the word “lifespan” is used in the correct context people are very willing to embrace even radical lifespan extension. It seems prudent to combine both concepts.
Asked “If doctors developed a pill that enabled you to live forever at your current age, would you take it?” a surprising number of people turned out to be hardcore life extensionists: “There were no differences by age...Among young adults, 40.0% indicated they would not take the pill, 34.2% indicated they would take the pill, and 25.8% indicated they were unsure.”
Barnett, Michael D., and Jessica H. Helphrey. “Who wants to live forever? Age cohort differences in attitudes toward life extension.” Journal of Aging Studies 57 (2021): 100931.

Kamil Pabis 30 Nov 2022 14:18 UTC
2 points
0
on: Preventing atherosclerosis, the easiest way to improve your life expectancy?
Knowing your risk does not change behavior, at least that seems to be the case with genetic risks. That means dietary and lifestyle approaches towards cardiovascular disease are out. As a good approximation, everyone who wants to have a healthy lifestyle already has one*.
On the other hand, it is possible that more people would benefit from wide-spread use of statins and that they could be convinced to actually take them.
Cardiovascular disease is definitely not a neglected cause area. It is a multi-billion dollar industry and a very popular research field. Neither is targeting cardiovascular disease an effective approach towards improving population health due to Taeuber’s paradox:
”..[the complete] elimination of neoplasms as an underlying cause would result in 3.83 life years to be gained among men, and 3.38 life years to be gained among women. Elimination of cardiovascular diseases results in a larger gain in life expectancy: 4.93 years among men and 4.52 years among women. “
https://jech.bmj.com/content/53/1/32.short
As you can imagine the benefit to human healthspan and lifespan due to a marginal reduction in cardiovascular disease achievable through refinements of diet and drugs would be minuscule.
The only way to significantly (and efficiently) improve human healthspan in developed countries is through slowing aging which is a risk factor for all major diseases.
*A potential cause area would be to work on legislative change that will compel people to change their lifestyle, this could be feasible, e.g. via taxation.

Kamil Pabis 9 Oct 2022 5:43 UTC
1 point
0
on: So, geez there’s a lot of AI content these days
I enjoyed a lot of the other content and hence am now much more inclined to read the EA forums rather than lesswrong. These changes could mean that people like me, who are primarily interested in progress studies and applying science and reasoning to better humanity and themselves, may miss out on relevant AI content when they move to another site. Then again perhaps the EA forums are more relevant to me anyway and I should spend more time reading these.

Kamil Pabis 5 Jul 2022 10:53 UTC
1 point
−1
on: any good rationalist guides to nutrition / healthy eating?
Nutritionists are not dumb
Let’s not be too cynical here. While, yes, nutrition science is short on definite conclusions, it still remains a science. If you want to figure out how to eat healthy, you would find this out the same way you would check whether aspirin prevents cardiovascular disease in certain subgroups or whether paracetamol extends the duration of symptomatic respiratory tract infections.
Step 1: Is there a consensus statement from a reputable professional society? Do different organizations and groups agree? If yes, here is your conclusion. Most sources agree that saturated fat is unhealthy. This is not controversial in nutritional science.
Step 2: Lacking consensus, what do up-to-date reviews and meta-analyses in reputable journals say? Maybe the data is so new that no consensus has emerged or maybe it is controversial for a reason. I find that a good review often presents both sides to the argument. This would be the case with moderate alcohol consumption. Last I checked, there is no consensus and both sides have good arguments.
Step 3: What are the implications if something were true or wrong? How do I balance my own time, money and quality of life against the promise of extended healthspan? Now here you will need a bit of statistical knowledge or intuition as well as a general understanding of biology. In the case of alcohol, given the doses and effect sizes involved, the harm or benefit of either side being correct would be very small.
More importantly, the healthier you are, the less you will benefit from optimizing your diet. Nutrition is an extreme example of diminishing returns. This is because the most important paradox you have never heard of, Taeuber’s paradox, clearly shows that any improvement in healthspan (without slowing the aging rate) runs into tremendous diminishing returns.
To be worth your time, promising nutritional interventions above and beyond the basics must have certain properties, i.e. they must slow aging, potentially slow aging, improve non-health related quality of life, or address multiple health-outcomes at once. In this regard, all-cause mortality is the surrogate outcome worth paying the most attention to—although it is still imperfect.

Kamil Pabis 23 Jan 2022 17:22 UTC
0 points
in reply to: jimv’s comment on: Omicron Post #15
I am not sure why we cannot have a vaccine against both strains. The HPV vaccine protects against 9 HPV subtypes, for example. Either I am missing something or it’s just the medical establishment moving slowly, as always.

Kamil Pabis 19 Dec 2021 11:14 UTC
1 point
in reply to: Riffer’s comment on: Omicron Post #7
Given the data we have getting an “illicit” fourth booster shot might be the safer play. The mRNA vaccines continue to work, especially against severe disease, the effect is just much diminished.

Kamil Pabis 19 Dec 2021 11:09 UTC
2 points
in reply to: avturchin’s comment on: Universal counterargument against “badness of death” is wrong
Also, is there even any evidence for this assertion? If we stipulate that absolutist monarchies are about as bad as a dictatorship then how did that assertion work out historically? Over the last 10′000 years when lifespans were much shorter dictatorships and related systems flourished. The ascent of democracy has paralleled an increase in lifespans. Correlation does not imply causation, but at least it makes it more likely, whereas the dictator argument is just speculation as far as I can tell.

Kamil Pabis 15 Oct 2021 16:46 UTC
1 point
in reply to: Dzoldzaya’s comment on: Book Review: Open Borders
1. Thank you for making a great point! Large countries do implement limits on internal migration to ensure political stability. The Chinese system is called hukou if anyone wants to read up on it; I am no expert myself. I would, however, disagree that these limitations suggest there is no free movement. In fact, the very existence of these limitations suggests we should open up compared to the baselines, but perhaps not fully.
  The population of Shanghai grew almost 100% from 14M to 27M within the last 20 years—and the city transformed into a wealthy metropolis like NYC. According to Wikipedia, consistent with my intuition, a relaxation of Hukou migration restrictions coincided with the (post-)Deng Xiaoping era of stability and prosperity. So internal migration in China is enormous and while it is hard, it can’t be that hard to move. Now, of course, these people are mostly Han Chinese and it is an interesting question how many immigrants of a different cultural background we could handle in Europe.
2. Agree, it is naive to argue for a “free lunch”. As far as I recall, there is good economic evidence that migration from e.g. Afghanistan is a net cost for the taxpayer in Germany despite the younger age structure of the immigrants. (It only works out under extremely optimistic assumptions, if the immigrants can find higher-paying jobs than expected.) Migration (from [very] poor countries) should be considered a form of “foreign aid”, it is a cost; and it is a question of political stability. Having many immigrants is useless if the AfD or Front National then rises to power, reverts your measures and sabotages democracy.
  
  How does political stability change, though, is it linear with the number and type of immigrants or are there thresholds?
3. Does this point argue strongly against open borders? Both systems could work fine and strike a similar balance. Higher migration, lower migrant rights. Lower migration (but still higher than the status quo), better migrant rights. Either way, we are trying to maximize the same product: [Number of immigrants] x [net improvement in migrant life = wellbeing(home country) - wellbeing (target country)]. Europe opts for the former, the Gulf or Singapore for the latter. Neither can tell us if a deviation from the status quo towards more migration would be beneficial or not since the systems are so different.

Kamil Pabis 15 Oct 2021 16:11 UTC
2 points
in reply to: Jolyon Hine’s comment on: Book Review: Open Borders
You are right, the same is true in Germany as well. There is even some evidence for lower crime rates for certain immigrant groups (e.g., first generation immigrants from Turkey, or SE-Asian/Chinese immigrants, if I recall correctly). Still, more crimes means more crimes, even if this is due to demographics, and the voters will punish the pro-immigrant parties accordingly.

Kamil Pabis 12 Oct 2021 15:06 UTC
3 points
on: NVIDIA and Microsoft releases 530B parameter transformer model, Megatron-Turing NLG
How limiting are poor corpus quality and limited size for these models? For example, Megatron-Turing NLG was only trained on PubMed extracts but not on PubMed Central, which is part of the Pile dataset. Was this perhaps intentional or an oversight?
Regarding medical texts, I see many shortcomings of the training data. PubMed Central is much smaller at 5 million entries than the whole PubMed corpus at 30 million entries, which seems to be unavailable due to copyright issues. However, perhaps bigger is not better?
Regarding books, how relevant is the limited size and breadth of the corpus? Books3 contains 200k books out of some 10 million that should be available via amazon.
Regarding copyright, could a less ethical actor gain an advantage by incorporating sci-hub and libgen content, for example? These two together claim to include 50 million medical articles and another 2 million books.

Kamil Pabis 7 Oct 2021 23:41 UTC
1 point
in reply to: Zvi’s comment on: Covid 10/7: Steady as She Goes
As far as I can tell, if they suspend one of two available mRNA vaccines this is bound to have zero effect on vaccination rates in the young because the other one can fill the gap.

Kamil Pabis 5 Sep 2021 14:50 UTC
3 points
in reply to: Adam Zerner’s comment on: Humanity is Winning the Fight Against Infectious Disease
Do you think this is a problem? It appears to me that no development is possible without some tail risk (which we obviously want to minimize wherever possible!). Can we come up with a realistic world in which technologic progress is used for peaceful purposes exclusively and never causes any negative surprises? Or a world that develops with zero tail risk?

Kamil Pabis 5 Sep 2021 14:42 UTC
3 points
on: Should I treat pain differently if it’s “all in my head?”
My personal experience is that it’s true hence I would caution against too much rest. Wrist pain is a very vague term, no idea what you have, but I have battled RSI for over half a decade (mostly of the fingers) and at some point it got so bad that I wanted to quit my degree and it felt like even reading a book or newspaper was too painful. By all means, use your voice, contralateral arm or legs and feet to take over some repetetive tasks.
However, you need to use, strengthen and stretch your wrists as well. Targeted massage and strengthening with a physiotherapist should help. As workoholics we often forget how to listen to our body. Pain tells you to take a break, not do an allnighter. Then when having pain, it is easy to try to “protect” the affected bodypart, putting undue stress on other parts of the body, while the muscles, tendons, ligaments of the affected bodypart continue to weaken because they are unloaded and/or not used throughout their physiologic range of motion.
Before I jump to SSRIs I would start with psychotherapy, meditation, taking a real vacation, a healthy anti-inflammatory diet (standard food pyramid will do as a start), sleep hygiene to get 8h+ for recovery, sports (both endurance and strength, preferably something involving your arms and hands!), whole body sports massage etc.
I did find that the pain was to some extent in my head, to some extent real, and exacerbated by both overuse and chronic misuse.