Unfortunately, all this means is that there's no direct correlation between the two. For all we know there's also no correlation between tying your shoe-laces and having a gargantuan embolism.
Data on more than 120,000 participants in two U.S. studies that followed people for as long as two decades found no link between heart disease and a daily intake of six or more cups of coffee. In fact, the risk was the same as for people who had less than one cup of coffee or tea a month.
A couple of caveats go with the overall findings, the researchers say.
"We can't exclude the association between coffee consumption and the risk of coronary heart disease in small groups of people," says Rob van Dam, a research scientist at the Harvard School of Public Health and a co-author of the report.