[InSteady]

It isn't a cancer drug, so that isn't a fair comparison. GI symptoms from eating more broccoli and not ever drinking are also pretty mild compared to cancer drugs. Aspirin appears to be a preventative according to some initial research. National cancer institute says even the most at-risk age group (age 60+) is still only has cancer rates of around 1 in 100. How long are you going to take low dose aspirin?

Are GI symptoms mild if you take low dose aspirin on a daily basis for 30 years? 40? Longer even? All to reduce your odds of getting cancer from 1 in 100 to 1 in 120 at the latest stage of your life. The gains are marginal in younger stages of your life where cancer rates are much lower.

Don't get me wrong, if this is validated it's a very interesting result. A mechanism of action could be potentially groundbreaking. It doesn't mean start taking aspirin every day for the rest of your life at age 38 just to be on the safe side, however.

It is also worth considering that this is purely an association at this point. It is possible that some of this effect is because cardiovascular disease, the primary reason for taking low dose aspirin, tends to kill people before the odds of getting cancer have time to really flex their muscles. We might assume that ethical researchers without perverse incentives working within a system primarily concerned with scientific truth would have ruled out that possibility... but then we would be idealists who are ignorant of how the world works. Or any other number of reasons why this might turn out to be a big old pot of nothing to get excited about.

[tptacek]

Long term low-dose aspirin regimes are well studied and common (for cardiovascular protection). This isn't some oddball thing the study is suggesting people do; the reason they were able to survey over 1MM pts is that so many people are already doing this.

Meanwhile --- and I say this as a stalwart enjoyer and advocate of crucifers of all kinds --- broccoli is simply not associated with dramatic suppression of cancer metastases.

[copperx]

1 in 100 cancer odds is off by at least an order of magnitude. From the studies I've read, lifetime risk of cancer is about 1 in 3.

This should be used as an icebreaker in college. "Look to your left, then look to your right. One of you will die of cancer."

[stvltvs]

The study population was cancer patients, so low dose aspirin was studied as a cancer drug. It doesn't say what the effect would be in the general population. Don't take aspirin just because it might help cancer patients, but if you've had cancer, consult with your oncologist.

[throwaway290]

> It doesn't mean start taking aspirin every day for the rest of your life at age 38 just to be on the safe side, however.

Younger people than that do get cancer and die from it. If it arrests tumour growth and even sometimes causes reduction and one is at risk, resisting aspirin treatment out of cargo cult common sense is a bad idea.