Life, the Universe, and Everything

Book review: The Longevity Diet: Discover the New Science Behind Stem Cell Activation and Regeneration to Slow Aging, Fight Disease, and Optimize Weight, by Valter Longo.

Longo is a moderately competent researcher whose ideas about nutrition and fasting are mostly heading in the right general direction, but many of his details look suspicious.

He convinced me to become more serious about occasional, longer fasts, but I probably won’t use his products.
Continue Reading

Food Delivery Reviews

New food delivery services are springing up like weeds.


I’m primarily interested now in a substitute for restaurants. As I currently use restaurants, they provide variety in my food, but aren’t particularly convenient or healthy. Restaurant delivery services have been improving, but the user interfaces for ordering still seem clumsy and primitive (few restaurants seem to care enough to interface well with delivery services, and even fewer restaurants have both healthy food and adequate nutritional labeling).
Continue Reading

Book review: Tripping over the Truth: the Return of the Metabolic Theory of Cancer Illuminates a New and Hopeful Path to a Cure, by Travis Christofferson.

This book is mostly a history of cancer research, focusing on competing grand theories, and the treatments suggested by the author’s preferred theory. That’s a simple theory where the prime cause of cancer is a switch to fermentation (known as the metabolic theory, or the Warburg hypothesis).

He describes in detail two promising treatments that were inspired by this theory: a drug based on 3-bromopyruvate (3BP), and a ketogenic diet.

Continue Reading

Book(?) review: Microbial Burden: A Major Cause Of Aging And Age-Related Disease, by Michael Lustgarten.

This minibook has highly variable quality.

Lustgarten demonstrates clear associations between microbes and aging. That’s hardly newsworthy.

He’s much less clear when he switches to talking about causality. He says microbes are the root cause of aging, and occasionally provides weak evidence to support that.

I still have plenty of reason to suspect that much of those associations are due to frailty and declining immune systems, which let microbes take over more. Lustgarten doesn’t make the kind of argument that would convince me that the microbe –> senility causal path is more important than the senility –> microbe causal path.

He has a decent amount of practical advice that is likely to be quite healthy even if he’s wrong about the root cause of aging, including: eat lots of leaves, green peppers, mushrooms, and use low pH soap.

One confusing recommendation is to limit our protein intake to moderate levels.

He provides a nice graph of mortality as a function of BUN (see here for more evidence about BUN), which hints that we should reduce BUN by reducing protein intake.

He also notes that methionine restriction has significant evidence behind it, and methionine restriction requires restricting protein, especially animal proteins.

Yet I see some suggestions that protein (methionine) restriction is likely only helpful in people with kidney disease.

My impression is that high BUN mostly indicates poor health when it’s caused by kidney problems, and doesn’t provide much reason for reducing protein consumption, and least in people with healthy kidneys.

Lustgarten has since blogged about evidence (see the 7/11/2018 update) that higher protein intake helps reduce his homocysteine.

I have also noticed a (noisy) negative correlation between my protein consumption and my homocysteine levels. But that might be due to riboflavin – when I reduce my protein intake, I also reduce my riboflavin intake, since crickets are an important source of riboflavin for me. So I want to do more research into dietary protein before deciding to reduce it.

The book is too quick to dive into technical references, with limited descriptions of why they’re relevant. In many cases, I decided they provided only marginal support to his important points.

Read his blog before deciding whether to read the minibook. The blog focuses more on quantified-self-style reporting, and less on promoting a grand theory.

The point of this blog post feels almost too obvious to be worth saying, yet I doubt that it’s widely followed.

People often avoid doing projects that have a low probability of success, even when the expected value is high. To counter this bias, I recommend that you mentally combine many such projects into a strategy of trying new things, and evaluate the strategy’s probability of success.


Eliezer says in On Doing the Improbable:

I’ve noticed that, by my standards and on an Eliezeromorphic metric, most people seem to require catastrophically high levels of faith in what they’re doing in order to stick to it. By this I mean that they would not have stuck to writing the Sequences or HPMOR or working on AGI alignment past the first few months of real difficulty, without assigning odds in the vicinity of 10x what I started out assigning that the project would work. … But you can’t get numbers in the range of what I estimate to be something like 70% as the required threshold before people will carry on through bad times. “It might not work” is enough to force them to make a great effort to continue past that 30% failure probability. It’s not good decision theory but it seems to be how people actually work on group projects where they are not personally madly driven to accomplish the thing.

I expect this reluctance to work on projects with a large chance of failure is a widespread problem for individual self-improvement experiments.


One piece of advice I got from my CFAR workshop was to try lots of things. Their reasoning involved the expectation that we’d repeat the things that worked, and forget the things that didn’t work.

I’ve been hesitant to apply this advice to things that feel unlikely to work, and I expect other people have similar reluctance.

The relevant kind of “things” are experiments that cost maybe 10 to 100 hours to try, which don’t risk much other than wasting time, and for which I should expect on the order of a 10% chance of noticeable long-term benefits.

Here are some examples of the kind of experiments I have in mind:

  • gratitude journal
  • morning pages
  • meditation
  • vitamin D supplements
  • folate supplements
  • a low carb diet
  • the Plant Paradox diet
  • an anti-anxiety drug
  • ashwaghanda
  • whole fruit coffee extract
  • piracetam
  • phenibut
  • modafinil
  • a circling workshop
  • Auditory Integration Training
  • various self-help books
  • yoga
  • sensory deprivation chamber

I’ve cheated slightly, by being more likely to add something to this list if it worked for me than if it was a failure that I’d rather forget. So my success rate with these was around 50%.

The simple practice of forgetting about the failures and mostly repeating the successes is almost enough to cause the net value of these experiments to be positive. More importantly, I kept the costs of these experiments low, so the benefits of the top few outweighed the costs of the failures by a large factor.


I face a similar situation when I’m investing.

The probability that I’ll make any profit on a given investment is close to 50%, and the probability of beating the market on a given investment is lower. I don’t calculate actual numbers for that, because doing so would be more likely to bias me than to help me.

I would find it rather discouraging to evaluate each investment separately. Doing so would focus my attention on the fact that any individual result is indistinguishable from luck.

Instead, I focus my evaluations much more on bundles of hundreds of trades, often associated with a particular strategy. Aggregating evidence in that manner smooths out the good and bad luck to make my skill (or lack thereof) more conspicuous. I’m focusing in this post not on the logical interpretation of evidence, but on how the subconscious parts of my mind react. This mental bundling of tasks is particularly important for my subconscious impressions of whether I’m being productive.

I believe this is a well-known insight (possibly from poker?), but I can’t figure out where I’ve seen it described.

I’ve partly applied this approach to self-improvement tasks (not quite as explicitly as I ought to), and it has probably helped.

Descriptions of AI-relevant ontological crises typically choose examples where it seems moderately obvious how humans would want to resolve the crises. I describe here a scenario where I don’t know how I would want to resolve the crisis.

I will incidentally ridicule express distate for some philosophical beliefs.

Suppose a powerful AI is programmed to have an ethical system with a version of the person-affecting view. A version which says only persons who exist are morally relevant, and “exist” only refers to the present time. [Note that the most sophisticated advocates of the person-affecting view are willing to treat future people as real, and only object to comparing those people to other possible futures where those people don’t exist.]

Suppose also that it is programmed by someone who thinks in Newtonian models. Then something happens which prevents the programmer from correcting any flaws in the AI. (For simplicity, I’ll say programmer dies, and the AI was programmed to only accept changes to its ethical system from the programmer).

What happens when the AI tries to make ethical decisions about people in distant galaxies (hereinafter “distant people”) using a model of the universe that works like relativity?

Continue Reading

I wrote this post to try to clarify my thoughts about donating to the Longevity Research Institute (LRI).

Much of that thought involves asking: is there a better approach to cures for aging? Will a better aging-related charity be created soon?

I started to turn this post into an overview of all approaches to curing aging, but I saw that would sidetrack me into doing too much research, so I’ve ended up skimping on some.

I’ve ordered the various approaches that I mention from most directly focused on the underlying causes of aging, to most focused on mitigating the symptoms.

I’ve been less careful than usual to distinguish my intuitions from solid research. I’m mainly trying here to summarize lots of information that I’ve accumulated over the years, and I’m not trying to do new research.
Continue Reading

I tried the Plant Paradox diet, and didn’t notice any significant effects on my health. I was mainly hoping for improvements in my homocysteine and LDL-P, and I saw little change there.

My thyroid levels declined during that time – I expected some decline due to reasons relating to the inflammation which increased my thyroid levels earlier in the year, but the actual decline was larger than I expected. Most likely that was unrelated to the diet, and may have confounded my attempt to evaluate the diet.

Robert’s walnut allergy seemed to be eliminated or substantially reduced (although he doesn’t test that often enough to provide strong evidence that the Plant Paradox diet was what made the difference), and maybe some improvement in his acne (but probably less so than with the SCD diet). He experienced some discomfort when he resumed eating commercial burritos (due to gluten?), but less than after quitting the SCD diet.

I have concluded that this diet has small benefits compared to other reasonable attempts at a paleo diet, and those benefits vary a good deal from person to person. Since it’s a bit less convenient than a typical paleo diet, I’ve abandoned it.

Book review: Where Is My Flying Car? A Memoir of Future Past, by J. Storrs Hall (aka Josh).

If you only read the first 3 chapters, you might imagine that this is the history of just one industry (or the mysterious lack of an industry).

But this book attributes the absence of that industry to a broad set of problems that are keeping us poor. He looks at the post-1970 slowdown in innovation that Cowen describes in The Great Stagnation[1]. The two books agree on many symptoms, but describe the causes differently: where Cowen says we ate the low hanging fruit, Josh says it’s due to someone “spraying paraquat on the low-hanging fruit”.

The book is full of mostly good insights. It significantly changed my opinion of the Great Stagnation.

The book jumps back and forth between polemics about the Great Strangulation (with a bit too much outrage porn), and nerdy descriptions of engineering and piloting problems. I found those large shifts in tone to be somewhat disorienting – it’s like the author can’t decide whether he’s an autistic youth who is eagerly describing his latest obsession, or an angry old man complaining about how the world is going to hell (I’ve met the author at Foresight conferences, and got similar but milder impressions there).

Josh’s main explanation for the Great Strangulation is the rise of Green fundamentalism[2], but he also describes other cultural / political factors that seem related. But before looking at those, I’ll look in some depth at three industries that exemplify the Great Strangulation.

Continue Reading

[Warning: this post contains lots of guesses based on weak evidence. I’d be surprised if I got more than 80% of it right.]

I’ve long acted as if a good diet is fairly important, and I’ve gathered lots of relevant evidence. But until recently I classified that evidence into many small topics related to specific nutrients and health problems, and never organized those ideas into an overall assessment of how important a good diet is.

Comments by Jim Babcock prompted me to investigate a broader overview.

This post will mainly focus on evaluating the importance of nutrition for adults in wealthy nations, then will summarize my guesses about how to achieve a good diet.

Continue Reading