Although two to three cups of coffee a day seemed to be the most favourable overall, Kistler said that people shouldn’t increase their coffee intake, particularly if it makes them feel anxious or uncomfortable. “There is a whole range of mechanisms through which coffee may reduce mortality and have these favourable effects on cardiovascular disease,” he said. “Coffee drinkers should feel reassured that they can continue to enjoy coffee even if they have heart disease. Coffee is the most common cognitive enhancer — it wakes you up, makes you mentally sharper and it’s a very important component of many people’s daily lives.” So how might coffee beans benefit the heart? People often equate coffee with caffeine, but coffee beans actually have over 100 biologically active compounds. These substances can help reduce oxidative stress and inflammation, improve insulin sensitivity, boost metabolism, inhibit the gut’s absorption of fat and block receptors known to be involved with abnormal heart rhythms, Kistler said. In a third study, researchers looked at whether there were any differences in the relationship between coffee and cardiovascular disease depending on whether someone drank instant or ground coffee or caffeinated or decaf. They found, once again, two to three cups a day to be associated with the lowest risk of arrhythmias, blockages in the heart’s arteries, stroke or heart failure regardless of whether they had ground or instant coffee. Lower rates of death were seen across all coffee types. Decaf coffee did not have favourable effects against incident arrhythmia but did reduce cardiovascular disease, with the exception of heart failure. Kistler said the findings suggest caffeinated coffee is preferable across the board, and there are no cardiovascular benefits to choosing decaf over-caffeinated coffees.
Inputs from ANI