A man smoking in China, the country with the largest number of smokers in the world.
People around the world are living longer than they did a few decades ago, but they aren't necessarily healthier. Tobacco- and alcohol-related problems are on the rise, as are diabetes, obesity and depression. That is the conclusion of a global health study being published in the journal The Lancet. Anchor Marco Werman talks to Alan Lopez, one of the lead authors, to get more details.