But since this is all one-party and relatively anonymous, I’d like to take the opportunity to tell everyone that unless you have a PhD or MD in a relevant field, your thoughts about fiber are irrelevant and unwelcome to anyone actually suffering from the disease(s) in question.
If you look at the sequence of events that happen to trigger a heart attack, it becomes really clear how big a role luck is, but still you can mitigate each step. Studying this stuff also makes your body seem like a walking time bomb.
It's a bit hard to tell from your post what you're saying. Certainly I can imagine being annoyed by constantly being given health advice from layman. But this is... a forum.
I don't understand the relevance to the article. Does Multiple Sclerosis come with a higher risk of colon cancer?
I walked in and walked out no issue and went on about my day. Prep was fine but would be hard if I didn't work at home.
Definitely enjoyed the following times with anesthesia because, of course 0/10 as far as I know. Also, anesthesia just trips my mind—how seemingly time travel (going forward in time) seems to be involved.
My doc looked at me like I was crazy when I asked if it could be done without sedation, and reminded me that it would be uncomfortable, but otherwise didn't have any problem with it. I've endured 50k runs, brutal workouts, and traumatizing childhood neglect - I really can't see what the fuss is with mild discomfort that, by comparison, barely registers, and for such a short amount of time at that.
I thought it was going to be awkward but wasn't at all. We just chatted. It was him and an assistant. I was able to watch the TV of my colon while he was doing it.
And you get diarrhea-like bathroom runs half a dozen times maybe.
Yes it was annoying to get the runs and gross to drink the stuff the first few times, but people eat things like cow tongue or live octopus or whatever... I can handle some bad-tasting Gatorade and some diarrhea just fine, especially given the 5 years of peace-of-mind it buys me afterward.
The prep was horrible, particularly the electrolyte drink they make you take the night before. I almost puked several times trying to get that stuff down.
Actual procedure was a breeze. I was sedated, and then I woke up and it was over.
US diet? Is corn syrup common elsewhere?
My expectation is that it is less that there has been a growing trend of this cancer getting worse, and far more that we have gotten better at many other cancers. That is, overall, this is good news on progress. Not a scare headline.
The choices, personal or otherwise, I have seen can't be good for your body, and some you're simply not allowed to make anymore.
Ironically, sitting on this laptop typing this might be as bad, but win some/lose some.
But some obvious examples?
Ever dip a shirt in benzene because it cools you down? Apparently it feels like Vicks, but doesn't leave that sticky feeling behind.
A good portion drank 6+ beers a day. I know they must have eaten, but some I never saw consume food. At all.
Some smoked a pack or two of cigarettes a day. Asbestos was in everything.
There was no ventilation/filtration for welders, painters, woodworkers, etc. If you could open the shop door it was a good day.
https://seer.cancer.gov/statistics-network/explorer/applicat...
It sort of reminds me of when Lesswrong was fixated on a hypothesis that lithium levels in the water supply was the cause of the obesity epidemic. There was a lot of enthusiasm for the idea at the time, and somewhat understandably as it would have been a single variable that could be tweaked for massive societal benefits.
But there wasn’t really any credible evidence to support it. Trying to reduce the complexity of human biology and lifestyle to single cause/effect relationship is an easy and tempting trap to fall into to explain unknowns in medicine.
I think it's a combination of our pesticide usage and general food processing but like a sibling said these are educated guesses.
It's tempting to focus on some magic bad ingredient/practice to explain our bad health (like seed oils), but we don't exercise, we eat directly against dietary guidelines, and we eat foods that we know are bad for us.
Now add on to that the social media grifters and industry advocates who tell you that eating poorly is good for you.
I don't blame individuals just trying to live their life though. This is how we've let our whole food environment set up shop.
Whatever's going on, it's probably going to end up being complicated and multifactorial.
(I do love me a crucifer, though).
If you want to reduce your risk of cancer, your best bets are quitting smoking, stopping drinking, eating less meat, and exercising more.
Drinking, like, diet cola is nothing next to those. We know, without a doubt, tobacco, alcohol, and processed meats cause cancer.
My armchair recommendation: avoid processed foods (but you can have processed if you're really confident what goes in isn't harmful or just very occasional I guess), eat a good amount of salads and veggies alongside some cooked main course, like beans, rice, tofu, etc.. Eat some fruits throughout the day, and a reasonable amount of water. Chew your foods well. Exercise, bla bla bla, you know the drill ;)
I suspect there are other factors at play.
That certainly does not help the situation. Whether it's correlational or causal I'd leave up to people more knowledgeable in the subject.
The odds ratios for nearly all diseases and all-cause mortality shift so far from those two interventions it's almost unbelievable.
The current US administration is not at all interesting in addressing America's unhealthy food.
[1] https://cen.acs.org/environment/pesticides/glyphosate-roundu...
[2] https://www.fda.gov/news-events/press-announcements/fda-take...
Overall, the colorectal cancer story is encouraging https://news.ycombinator.com/item?id=47078840
My handy heuristic for headlines like this: Is it a scary new trend that means something or did other factors suppressing its natural emergence decline? Or is it a matter of observation?
A recent real-world example was the detection of two different objects entering the solar system. The naive speculation was "they came on the same plane, so they must be alien!" But the reality is more mundane: the new detection method that found them, while flexible, started by looking at that plane. So of course both objects it detected were on that plane.
- insufficient fibre
- too much high fructose corn syrup
- too much milk
- too much citric acid
- toxins and parasites (gut cleanse!)
- washing chicken in chlorine (voiced as hypothetical)
- ultra-marathoners - maybe their supplements and too much carbs or dehydration?
- too much processed junk
- vitamin and mineral deficiencies
- radiation
- insufficient veggies
I’m more amazed at the toxic (no pun intended) comments in this post. It seems HN isn’t a place to voice health theories.
In addition a lot of the speculation assumes something specific to the US where this is a trend in multiple countries, predominantly high income ones[0][1], but this speculation that it might be 'chemicals' is fairly dull to read and adds nothing. Why this cohort specifically? What commonalities are there between countries with an observed increase? If it's diet why would it only impact the younger cohort?
[0]: https://www.thelancet.com/journals/lanonc/article/PIIS1470-2... [1]: https://www.gastrojournal.org/article/S0016-5085(21)00010-X/...
I work with health research doctors and I've too much respect for them to humour "health theories". And they don't tell me how to do my job either.
>E. coli toxin could be linked to rising rates of bowel cancer in younger adults https://news.cancerresearchuk.org/2025/04/23/colibactin-e-co...
You would have never guessed he was an unhealthy guy by looking at him, but I do assume it has something to do with foods we consider normal in the US. I've taken a page out of Bryan Johnson's book and started eating well over 100% of recommended daily fiber intake (easy and enjoyable if you make some chia seed porridge every morning), and I will say my digestion has never been better. Keeping the system clear seems like a sane first line of defense to preventing this kind of thing.
But, no. They didn't find a single thing. Blood and stool tests came back fine. Not even a polyp was found during the colonoscopy.
The only thing that kind of sucked, was the prep - there's no way around that. But the colonoscopy itself, no problem. I get some mild sedatives, but was completely awake during the procedure - even watched it on the screen.
- Sugary drinks (≥2/day as teen) - 2x
- Sedentary lifestyle (>2hr TV/day) - 1.7x
- Childhood antibiotics (recurrent) - 1.5x
Have any studies tracked the growth of these behaviors in recent decades, potentially lining up with the increase in early onset CRC?
Found it: https://www.hankgreen.com/crc
I'm likely going to die of either a heart attack (already had one, at age 28), or cancer, and it seems genetic.
EDIT: Specific genes and alleles below, if anyone is curious
Such that, yes, we can still get better. But people here are reacting as if there is some damning evidence that just doesn't track with the data. Even with an uptick in younger people getting this, we still don't have a smoking gun on anything that is directly causal to this.
Also, holy crap, if you have rectal bleeding, don't ignore it! That that is listed as an early warning sign that people ignore is terrifying.
If people enjoy it and really get a lot out of it then I wouldn't judge them for doing it, but let's not pretend it's healthy, because all the evidence is that it isn't.
In terms of cardio being able to run a half decent 5k a couple of times a week is probably a good idea, any more volume than that is really not necessary and at some point becomes harmful
Antibiotics, Potassium bromate, aspartame, Red 40, rBGH/rBST, Chlorpyrifos, Atrazine and many more
eat healthy my lads. trust not the media
I recommend everyone do a gut cleanse once a year.
Gut cleanse, colon cleanse, detoxing. None of this is supported by science. Nor would any of these things cure, prevent or in anyway help a parasitic infection.
Here are some common parasitic infections and how they're treated. None of these treatments recommend gut cleanse. https://en.wikipedia.org/wiki/Giardia#Infection https://en.wikipedia.org/wiki/Toxoplasma_gondii#Treatment https://en.wikipedia.org/wiki/Ascariasis#Treatment https://en.wikipedia.org/wiki/Hookworm_infection#Treatment https://en.wikipedia.org/wiki/Pinworm_infection#Treatment
Gut inflammation can be a problem, but I would not recommend treating it or even diagnosing it without evidence.
I had gut dysbiosis for the past couple of years. Went to an alternative/func doctor and she helped me do a program such as this, in a safe manner: https://www.gutprotocols.com/products/full-moon-kit-parasite...
While yes this isn’t scientifically backed, because there’s just no clinical trials yet, doesn’t mean it is bunk. I did a program myself and it fixed all of my problems. My stool inflammatory markers went down drastically, as did my myriad of symptoms that caused me issues every day.
Perhaps I was wrong in strongly recommending people just go do this randomly without any doctor oversight. Whatever. I just wanted to offer my experience because it helped me and can help others. Take it or leave it.
For similar reasons, I also wonder about people who consume raw milk. These people are more likely to endorse ivermectin for e.g. covid, because it made them feel much better. Maybe it's possible these people aren't lying about that, but not because it cured their covid.
And I’m not sure what toxins is supposed to mean and how Americans are more exposed to toxins than developing world children scouring through our electronic garbage on a daily basis
Parasites are quite a global problem: https://www.sciencedirect.com/topics/immunology-and-microbio.... I don’t even know why we’re arguing this.
Now we don’t know what toxins are? Really?
Doing an ambiguous preventive activity on 1 out of 365 days doesn't sound effective.
Yes I can eat this 4200cal Costco pizza, I did my cleanse last month.
“gut cleanse” obviously is a trigger phrase on HN it seems.
Earlier screenings are just compensating for poor education. It's not a solution to anything but the question of how to raise insurance costs for young people.
Just eat your damn vegetables!
Some things to consider:
>There are classifications of fiber, insoluable vs soluable
>Even those classifications are overly generalized, and can/should be broken down into basically individual foods.
>Fiber and the various types have impact on your gut bacteria. If your gut bacteria is bad, you might be fueling growth of bad bacteria.
>You don't actually need fiber
>You don't actually need a colon
>I think gut bacteria management will probably be the next big thing. A combination of more scientific probiotics + fiber/prebiotics.
>I'm guessing the colon cancer thing is probably due to pollutants. Not necessarily air, but could be from food.
Splitting hairs beyond that, like insoluble and soluble, is the kind of thing that just confuses and intimidates people about nutrition advice.
It's a bridge you can cross once everyone is eating 50g+ of fiber per day, has chiseled physiques, and are looking to min/max.
> You don't actually need fiber
Hey, you know what fiber is good for? Speeding up gut motility! You know what a faster gut motility is good for! Getting toxins out of our body quicker!
At least if you can find some not previously doused in poison.