Not every report at the AHA’s annual conferences on Cardiovascular Disease Epidemiology and Prevention and Nutrition, Physical Activity and Metabolism was totally upbeat for coffee lovers. One report did find a potential link between coffee drinking and high blood pressure, but the effect was described as “modest.” And, like the other studies, it came hedged with the caveat that the finding wasn’t based on a controlled trial — the gold standard for assessing risk and benefit — but from observational studies, which don’t exclude all possible factors.