Growth hormone treatment may do more than its name implies. According to Greek researchers, growth hormone seems to benefit people with heart failure by improving the functioning of their heart, enabling them to be more active. The team says it may even reverse the progressive nature of the condition. Writing the European Heart Journal, Dr. Stamatis Adamopoulos and colleagues at the Onassis Surgery Center in Athens, note that abnormal immune reactions may contribute to chronic heart failure. To see if the immune-modulating effects of growth hormone might be helpful, they studied 12 patients with moderate to severe chronic heart failure.