http://www.dailymail.co.uk/health/article-1376690/Could-fry-followed-doughnuts-good-heart.html

It sounds like the recipe for a heart attack. But a fry-up followed by a plate of doughnuts could actually be good for the heart.

Research suggests that the odd greasy treat somehow boosts the heart muscle, reducing the amount of damage done when a heart attack occurs.
Those with a taste for junk food will be glad to know that it is thought that fried foods, like chips, bacon and doughnuts, provide the best protection.

Unfortunately, doctors stress that the research is still preliminary – and it is far too early to swap muesli topped with blueberries for a traditional English breakfast.

The U.S. researchers fed mice on a lard-based or normal diets for periods of 24 hours to six weeks and then looked at how they fared when they had a heart attack.