03 Dec 2018 --- Popular cooking and nutritional ingredient curcumin may improve exercise intolerance – a hallmark of chronic heart failure – when taken by people who have experienced the condition, a study published in the Journal of Applied Physiology has found. The researchers note that based on these findings, and previous studies, more targeted drugs should be formulated, and the consumption of foods that are rich in nuclear-factor E2-related factor 2 (Nrf2) activators should be encouraged.