(CNN)Is coffee safe or risky for your heart? Two recent studies appear to contradict each other on this question, which often leaves coffee-lovers scratching their heads. A study presented at the British Cardiovascular Society conference in June suggests that drinking five cups of coffee a day was no worse for the arteries than drinking less than a cup. Up to 25 cups of coffee a day still safe for heart health, study says The study of more than 8,000 people across the United Kingdom also found that even those who drank up to 25 cups a day were no more likely to experience stiffening of the arteries than someone drinking less than a cup a day. A cup of joe can come with some health benefits, as it contains antioxidants and has been associated with living longer, but some other studies suggest that overloading on coffee can put your heart health at risk. Recent research found that heavy coffee consumption, measured as six cups per day, may be associated with a moderate increase … [Read more...] about How much coffee is too much?