99.4% is the current best estimate. If you're under 50 or healthy, it's effectively 100%. That's not to minimize the very real human tragedy though. Just a b

99.4% is the current best estimate. If you're under 50 or healthy, it's effectively 100%. That's not to minimize the very real human tragedy though. Just a bit of context. Remember that 650,000 people die of heart disease every year, and a lot of those deaths are preventable.