Coffee has not always been perceived as “good for you”, to say the least. For decades it sat on the same list as smoking and drinking, but new research debunks this association. Drink up!
What the current research shows
In July 2026, the American Heart Association published a formal scientific statement on caffeine and cardiovascular health. The key findings:
Up to 5 cups of caffeinated coffee a day is considered safe for most adults, and is associated with lower risk of heart disease, heart failure, stroke, and type 2 diabetes.
The benefit applies to black coffee specifically. Added sugar, cream, or flavored syrups reduce or offset it. Sorry.
The brewing method affects cholesterol. Unfiltered, or screen filtered coffee, such as espresso, French press, or boiled coffee, contains compounds called cafestols that raise LDL cholesterol. A paper filter removes them, so pourover and drip coffee does not carry this effect.
The benefit is coffee specific, not caffeine specific. Energy drinks contain far more caffeine per ounce and are associated with higher blood pressure and irregular heart rhythm rather than the benefits seen with coffee.
Above 5 cups a day, or with high dose caffeine sources, the benefit disappears and risk increases.
The researchers are careful to note this is still correlation, not proof of direct cause, and that people metabolize caffeine differently depending on genetics, age, and other health factors.
Why the research changed
Some of the older studies linking coffee to poor health outcomes did not account for confounding facts. A widely cited, but flawed, 1981 paper connected coffee drinking to pancreatic cancer, but the comparison group in that study – the ones that didn’t drink coffee – included people who avoided coffee because of other health issues, skewing the result. Later attempts to reproduce the finding, including by the same researchers, failed.
Another confounding variable that wasn’t taken into effect: People who smoke or carry high stress also tend to drink more coffee, and the correlation was confused for causality for a long time – for years studies were not built to separate those factors. Newer, more granular research followed large groups of people over long periods and accounts for this kind of confounding. That shift in method, more than any single new discovery, is why the health conclusions and recommedations for coffee have shifted.
A final word
None of this changes how we roast or what we roast (or how much coffee we drink ourselves! hint: as much as possible). It is simply useful to know if coffee is already part of your daily routine. Black, filtered, and 40 ounces or less per day is the version the best research we have supports.
Sources:
Scientific American, Science may finally have made up its mind about coffee’s health benefits, August 2026. https://www.scientificamerican.com/article/has-science-finally-made-up-its-mind-about-coffees-health-benefits/
American Heart Association scientific statement, Caffeine and Cardiovascular Disease, published in Circulation, July 2026. https://doi.org/10.1161/CIR.0000000000001454
