R
Ray Peat
raypeat.com · Personal blog · on HN since 2009
Ray Peat's site hosts his articles on nutrition, hormones, sugar, and oils, and aging.
What HN saysCommenters call his work out there and possibly wrong, though some find it interesting; his followers cite it on aspirin and fructose.
32HN people shared it
28linked it in comments
9stories submitted
271story points
1 year agolast shared
2009people per year2026
Most-shared posts
- 1Unsaturated oils.shtml6 people · first shared 2017
- 2The Great Fish Oil Experiment5 people · 28 points · first shared 2009 · 11 comments on HN
- 3Unsaturatedfats.shtml4 people · first shared 2017
- 4Aspirin brain cancer.shtml4 people · first shared 2016
- 5Glycemia, starch, and sugar in context (2009)3 people · 20 points · first shared 2009 · 10 comments on HN
- 6Iron's Dangers3 people · 2 points · first shared 2018 · discussion on HN
- 7Serotonin depression aggression.shtml3 people · first shared 2017
- 8Sugar issues.shtml3 people · first shared 2016
- 9Cholesterol longevity.shtml3 people · first shared 2016
- 10Caffeine: A vitamin-like nutrient, or adaptogen2 people · 212 points · first shared 2018 · 245 comments on HN
- 11Serotonin: Effects in disease, aging and inflammation2 people · 5 points · first shared 2015 · discussion on HN
- 12Coconut Oil2 people · 2 points · first shared 2020 · discussion on HN
- 13Intelligence and Metabolism2 people · 1 points · first shared 2010 · discussion on HN
- 14Gelatin.shtml2 people · first shared 2018
- 15Homepage2 people · first shared 2013
What HN people wrote when they linked it
nmerouze · 2013-09-08
I know this video and he's wrong (HFCS is bad, simple sugar and fruit fructose are not). I would recommend you to read articles on http://dannyroddy.com http://raypeat.com http://andrewkimblog.com backed by a lot of studies showing fructose is awesome.
jugjug · 2019-10-24
To me the article is very helpful. I aim to be in the global top 10-20% for the following areas: engineering, movement (functional capabilities of my body), martial arts (BJJ, maybe later MMA), nutrition, inner practice & discovering the nature of consciousness, art of learning and presenting. Combining engineering with one or two areas might be an interesting opportunity. The pool of software engineers who e.g. also do martial arts, or are interested in meditation or the process of learning seems globally large enough to support possible well-executed business.
Regarding marketing, I start to gravitate more towards experts who provide long-form content. For example, Ray Peat in nutrition [1] or John Danaher in BJJ [2]. This might be another marketing approach - no marketing at all, just providing high-quality long-form content, with no social media. It might attract people who think in a similar way as me.
[1] http://raypeat.com/
[2] https://bjjfanatics.com/products/back-attacks-enter-the-system-by-john…
kaiwenwang · 2025-08-30
Pretty sure cognition is biological. I am of the opinion though various programs and college admissions accelerate a large portion of capable and able people to the top, they are not likely the best out of the entire population. I have frequently met (mostly young males) working in restaurants or supermarkets who would do exceedingly well if they had the right circumstances. Though personality (in terms of choosing to fight for an education) is important too: of those I offered to sit down and chat with (because their media landscape is mostly bad social media/conspiracies), none have taken me up on the offer. Whether due to their personality or my approach I do not know.
https://raypeat.com/articles/articles/intelligence.shtml
https://kaiwenwang.com/writing/hypothetical-foldy-ears-as-an-indicator…
NewUser76312 · 2025-03-06
There's a niche online health community which follows the work of a late Dr. Ray Peat, who have been touting the benefits of aspirin for a long time:
https://raypeat.com/articles/aging/aspirin-brain-cancer.shtml
Some of Dr. Peat's disciples have even begun their own independent cancer research (in mice) trying to prove efficacy of far more basic interventions:
https://x.com/haidut/status/1751716166387597730
I've been an observer of this sphere since ~2017, have implemented various Peat-related concepts towards my own health and fitness, to overall positive results. What's interesting is seeing more and more of these theories - under the theme of 'bioenergetics' - starting to be proven out even in conventional research.
rattlesnakedave · 2023-12-05
Reminds me of Ray Peat: https://raypeat.com/articles/aging/aspirin-brain-cancer.shtml
Disclaimer: A lot of his stuff is pretty out there, and some of it may be outright wrong. I don’t recommend following his advice, but a lot of his writing is at least interesting.
TylerLives · 2023-01-06
I wonder if some of the benefits come not from caloric restriction itself but reduction of something else that's harmful.
> Regenerative healing also requires freedom from substances that inhibit the digestion of the debris. The great decline in proteolytic autophagy that occurs with aging (Del Roso, et al., 2003) can be reduced by inhibiting the release of fatty acids. This effect is additive to the antiaging effects of calorie restriction, suggesting that it is largely the decrease of dietary fats that makes calorie restriction effective (Donati, et al., 2004, 2008)[0]
[0] https://raypeat.com/articles/articles/regeneration-degeneration.shtml
nwe · 2022-04-23
According to Ray Peat, serotonin has many other functions in the body and increased serotonin can cause problems. Here is a good read: https://raypeat.com/articles/articles/serotonin-depression-aggression.…
jgalvez · 2019-04-02
Be careful. This article's sole purpose is to help sell decades' worth of toxic fish oil supply that's become worthless in light of more in-depth research. DHA accumulates in the brain with age and dementia as esters of cholesterol.
http://raypeat.com/articles/articles/fishoil.shtml
jseifer · 2009-12-17
While this isn't directly about the article, anyone who regularly takes fish oil should read "The Great Fish Oil Experiment" by Ray Peat at http://raypeat.com/articles/articles/fishoil.shtml.
That linked article goes in to way too much depth to really paste anything useful here but he basically says that while there are short term benefits to fish oil, it could actually be quite harmful to take it in the long term.
imcoconut · 2017-06-14
Ray Peat addresses the science better than anyone I've read. He's a biology phd from University of Oregon with a specialization in biochemistry, physiology, and endocrinology. Many of his ideas are not the mainstream but everything he writes about is extensively researched and cited.
He has a number of articles on sugar but a good one to start with is Sugar Issues[0]. It can get a bit technical so I would recommend keeping wikipedia and google handy. It looks to have around 50-100 references for further investigation. Here's also one of his many radio interviews where he discuses sugar (starts in earnest with respect to sugar at around 14:35, but whole talk is great)[1].
Basically, sugars (glucose, fructose, sucrose, lactose) are healthy and protective for a wide variety of reasons - as long as they are able to be fully oxidized by the mitochondria, to produce carbon dioxide and a greater number of ATP. Many of the alleged "evils" of sugar are actually due to the polyunsaturated fats, which inhibit proper metabolism of sugar and damage cells in a variety of ways. One well established mechanism is by competing with glucose for oxidation, resulting in higher blood sugar levels. This is known as the Randall cycle (or glucose fatty acid cycle) and actually serves as the foundation for an as-of-yet unchallenged theory of type 2 diabetes.
I highly recommend reading ray peat, and listening to his interviews. His intelligence, recall, and ability to synthesize information to…
ChumpGPT · 2024-10-27
I don't know if you're familiar with Ray Pete, but he writes about seed oils and the affect they have on our health.
https://raypeat.com/articles/articles/unsaturated-oils.shtml
You said that you suspect it is the heating of the oils, but even the oil found in ice creme has been heated somewhere in the process unless it is cold pressed. Can she eat sun flower seeds, olives or avocado without a reaction? Have you tried coconut oil as an alternative?
aeblyve · 2024-01-06
It seems appropriate to share an article of Ray Peat's here.
https://raypeat.com/articles/articles/dark-side-of-stress-learned-help…
ablyveiled · 2023-05-11
I haven't Indexed It in my Memex or anything, but look into the work of Paul Mason or Ray Peat (to look into "pro-cholesterol" thought generally)
https://raypeat.com/articles/articles/cholesterol-longevity.shtml
dennis_jeeves1 · 2023-01-27
>So this Omega-3 is proven not to help the brain. It maybe even harmful. The second assertion has not yet been refuted.
So I don't recollect all sources but it does appear that for people who understand the nuances ( of which there are not many) it indeed could be harmful.
One source: https://raypeat.com/articles/articles/fishoil.shtml
netmonk · 2022-09-25
This article is the illustration of circular thinking: Linoleic acid is called essential fatty acid, therefore it is essential...
Nobody challenges how it was decided that it is essential.
https://raypeat.com/articles/articles/unsaturatedfats.shtml
dilap · 2022-08-19
Ray Peat has an interesting essay questioning if they are really essential.
https://raypeat.com/articles/articles/unsaturatedfats.shtml
PKop · 2022-07-03
Arguably we have a problem of too much iron, especially supplemented in cereals and such, producing free-radicals that damage cells:
https://raypeat.com/articles/articles/iron-dangers.shtml
Ray Peat advice for men is to donate blood periodically to remove excess iron from our body.
hourislate · 2022-02-24
>Coconut oil is the least fattening of all the oils. Pig farmers tried to use it to fatten their animals, but when it was added to the animal feed, coconut oil made the pigs lean [See Encycl. Brit. Book of the Year, 1946].
https://raypeat.com/articles/articles/unsaturated-oils.shtml
MrBuddyCasino · 2021-11-18
> naturalistic fallacy or the "good old days"
This is not a fallacy: https://en.wikipedia.org/wiki/Lindy_effect
Ray Peat has been warning about seed oils for decades, I'm not sure if its bullet-proof but at least its interesting: https://raypeat.com/articles/articles/unsaturated-oils.shtml
yourabstraction · 2021-10-27
Honesty, it's probably everything you listed. Also, if you were on vacation, reduced stress, sun exposure, movement, etc. would contribute too.
I looked into the negative ion thing a few years ago, and there does appear to be something to it. It seems it can have a positive impact on the lungs, which actually handle more than just breathing. Serotonin is inactivated in the lungs, so in theory negative ions could help reduce circulating serotonin, which could have a mood boosting effect. This is of course if you buy into the argument that serotonin is not so much the happy chemical but the chemical of stress [1].
https://raypeat.com/articles/articles/serotonin-depression-aggression.…
briefcomment · 2021-06-08
It's probably not as clear cut as that. Studies at the bottom of this article.
[0] http://raypeat.com/articles/articles/genes-carbon-dioxide-adaptation.s…
partyboat1586 · 2020-08-19
Take it for what it is:
http://raypeat.com/articles/articles/unsaturated-oils.shtml
YinglingLight · 2019-03-11
Gelatin is godlike http://raypeat.com/articles/articles/gelatin.shtml
greywolve · 2016-12-12
The opposite view: http://raypeat.com/articles/articles/sugar-issues.shtml . Ray Peat's argument is that polyunsaturated fats are the real culprit, and if you look at most sugar laden foods these days, it's difficult to find any that don't also contain a decent amount of PUFA.
a8da6b0c91d · 2014-05-13
Fish oil has an effect but it is probably quite harmful.
http://raypeat.com/articles/articles/fishoil.shtml
N-3 fatty acids interfere with oxidative metabolism and promote cancer. In the short term N-3 oils can appear to help various problems like inflammation because they suppress the immune system. In the long term that's obviously bad.
cogman10 · 2025-03-06
Devil of a time digging up the original source, but here it is.
> People who take aspirin, drink coffee, and use tobacco, have a much lower incidence of Alzheimer’s disease than people who don’t use those things. Caffeine inhibits brain phospholipase, making it neuroprotective in a wide spectrum of conditions. In recent tests, aspirin has been found to prevent the misfolding of the prion protein, and even to reverse the misfolded beta sheet conformation, restoring it to the harmless normal conformation. Nicotine might have a similar effect, preventing deposition of amyloid fibrils and disrupting those already formed (Ono, et al., 2002). Vitamin E, aspirin, progesterone, and nicotine also inhibit phospholipase, which contributes to their antiinflammatory action. Each of the amyloid-forming proteins probably has molecules that interfere with its toxic accumulation.
https://raypeat.com/articles/aging/madcow.shtml
miguelrochefort · 2017-10-31
mirekrusin · 2017-02-15
It's more complicated but he's saying for example [1] that stress elevates serotonin (ie. in hibernating animals stress from declining food supply elevates serotonin production, which decreases body temperature by lowering metabolic rate; similar effect is in non-hibernating animals, like humans, in winter).
Interesting idea somewhere in the middle of this article, about "generations" of anti-depression drugs. He's basically saying that when drug patent is close to expire, they "invent" new generation of drugs, which patent holders claim is better than previous one (he's saying that 3rd gen (SRI - Serotonin Reuptake Inhibitors) are actually not better than 1st gen (MAO - MonoAmine Oxidase)).
He's saying that Lilly makes over $2 billion per year on Prozac for example.
From what he's saying it also seems that "playing" with serotonin increases suicide rate in people who didn't have suicidal thoughts (but were depressed).
Also that the clearest effect from studies of serotonin is that it's causing "learned helplessness" in subjects.
I'm not sure how accurate this is, just skimmed over [1] - please read the source if you want more info. There are other articles on that site as well related to serotonin.
[1] http://raypeat.com/articles/articles/serotonin-depression-aggression.s…