64% of American adults currently consume coffee every day. About 400 million cups of coffee are consumed every day, so it's not a surprise that this could tell you a little something about your cardiovascular health. In a world-first study of 390,435 people, University of South Australia researchers found causal genetic evidence that cardio health, as reflected in blood pressure and heart rate, influences coffee consumption. Driven influences on habitual coffee intakes suggest that people tend to naturally regulate their coffee consumption based on blood pressure levels and heart rate. These findings suggest that observational studies of habitual coffee intakes are prone to influences by reverse causation, and caution is required when inferred health benefits result from comparisons with coffee abstainers or decaffeinated coffee drinkers. So whether it be, an Espresso, Decaf, a Cappuccino, or any other, these preferences arise from the constant consumption of such. "But what we don't recognize is that people subconsciously self-regulate safe levels of caffeine based on how high their blood pressure is, and this is likely a result of a protective genetic a mechanism. Conversely, a non-coffee drinker, or someone who drinks decaffeinated coffee, is more likely prone to the adverse effects of caffeine, and more susceptible to high blood pressure." lead Prof. Hyppönen says. How much coffee we drink is likely to be an indicator of our cardio health so it's best to listen to our body because it may be telling us more than what we tend to pick up!