It has been well-known for some time now that women enjoy longer life spans than men all around the world. Many studies have examined why and whether men can do anything about it. The statistics are related in part to physical and biochemical differences, but controllable factors also play into life expectancy. Men tend to have more unhealthy behaviors than women, smoking and drinking more heavily and overeating more often. Men also tend to avoid doctors more than women, and are, on average, less socially connected.