Actually, the paper this article is based on suggests the opposite: "Only a minority of 5.6% [of those who later experienced a lethal CVD event] were free of a

Actually, the paper this article is based on suggests the opposite: "Only a minority of 5.6% [of those who later experienced a lethal CVD event] were free of any risk factor. This challenges claims that CVD events commonly occur in persons who have not been exposed to a major risk factor." (where the risk factors include high cholesterol, obesity, hypertension, smoking and diabetes)