An estimated three billion cups of coffee are enjoyed every day around the world, Knowing the limits of what’s good for you and what’s not is imperative says Professor Elina Hyppöne. Latte, cappuccino or short black, morning coffee is essential for many people looking to kick start their day. But while the humble coffee may be a vital feature of the daily grind, how much is too much? While the pros and cons of drinking coffee have been debated for decades,…