We’ve long known that a Mediterranean inspired diet rich in olive oil is associated with disease prevention, but recent studies are showing promise in disease treatment as well. In an animal study at the University of Illinois, either palmitate (the dietary fat found in animal fats, dairy, and palm oil) or oleate (the dietary fat found in olive oil) was delivered directly to beating rat hearts with heart failure. The palmitate treated hearts continued failing, with depressed fat metabolism and storage. On the other hand, the oleate treated hearts greatly improved, with restored fat content in cells, improved contraction, and normalized fat metabolism genes. In fact, after observing the hearts treated with oleate, the scientists declared that the fat content, turnover, and oxidation in the failing hearts “were indistinguishable from those of the healthy heart."
Circulation. 2014 September 29, pii [Epub ahead of print] (Lahey R et al.)