Type D personality and cardiovascular risk
Research suggests that, for heart health, it's better to be a gregarious Pooh Bear than a gloomy, isolated Eeyore.
In the 1970s and '80s, the type A personality became a focus for cardiovascular research and a popular buzzword. People with such personalities — hard-charging, competitive, driven — were thought to be particularly at risk for heart attacks. But research hasn't borne out the connection.
Subsequent studies have zeroed in on links between heart problems and anger. Other research points to the recently defined type D personality as a source of increased cardiovascular risk.