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Comment by have_faith | Hacker News Reader

It drops my jaw that anyone drinks that regularly.

Well, this massive million drinker meta-analysis of coffee consumption (high levels, 5 cups a day) shows it significantly improves cardiovascular health. [1]

> A nonlinear association between coffee consumption and CVD risk was observed in this meta-analysis. Moderate coffee consumption was inversely significantly associated with CVD risk, with the lowest CVD risk at 3 to 5 cups per day, and heavy coffee consumption was not associated with elevated CVD risk.

[1] https://www.ahajournals.org/doi/full/10.1161/circulationaha....

What does it do to every other disease? Doesn't say much if it looks at a single factor outcome.

Suffice to say, if there were meaningful risks from drinking normal amounts of coffee, it would be known by now. Its main drawback is that it makes people nervous and jittery if taken in excess.

One of the other major ones is that it can aggravate stomach problems like gastritis since both coffee (even decaf) and caffeine are said to stimulate stomach acid production.

Sleep problems as well and migraines.

I believe caffeine is both a treatment for, and a cause of headaches. [1] Excedrin for instance is a migraine treatment which includes Tylenol and caffeine.

[1] https://americanmigrainefoundation.org/resource-library/caff...

Reason it’s a treatment is helping absorption typically, but also, a lot of people’s headaches are from withdrawal so it helps in the way drinking a beer helps a hangover.

There is also a breadth of studies that show consumption is bad - I wouldn't cheer just yet.

I'm fairly confident none of them were million-person multi-year meta-analysis, although I'm always happy to be proven wrong. Do you have any broad, high-confidence studies you have in mind?

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