Smoking just one cigarette a day puts people at a much higher risk of heart disease and stroke than those who abstain entirely.
E-cigarettes come in over 7,000 flavors. If the flavors were banned, as American regulators wish, more people are likely to smoke traditional cigarettes.
How much do Americans smoke? Not nearly as much as they used to. But e-cigarettes are exploding in popularity. And sales of traditional cigarettes are not falling as quickly as they were.