Nope, the author uses coffee and caffeine pretty interchangeably, and probably refers to caffeine more than coffee. It's clearly about both, although there is a brief mention of some of the purported additional health benefits of coffee that caffeine might not be responsible for.
> The past couple of years have seen findings, that, taken together, suggest that we should embrace coffee for reasons beyond the benefits of caffeine, and that we might go so far as to consider it a nutrient.
