"If you have plaque in your arteries, this is a perfect time for them to rupture and lead to a heart attack, " Steinbaum says.

CNN: Shoveling snow? How to protect your back (and your heart)

The quake off Sumatra happened at around 0800 local time, causing a giant rupture in the sea bed, which set a huge body of water moving at a speed of up to 700kph.

ECONOMIST: Deluged without warning | The

This constant low-level overproduction of leukotrienes, DeCode researchers figure, inflames artery walls, over time helping destabilize fatty deposits and making them prone to sudden rupture.

FORBES: Attacking Heart Attacks