Current estimates are that one tenth of the world's population suffers from obesity. This is not just being a bit overweight, this is being overweight enough to seriously impact your health. From diabetes to heart attacks, strokes to knee replacements, obesity impacts essentially every aspect of your health. Here is an article from the Self.com website that takes a brief look at the issue. If there is interest in more information, I would be happy to append this article with some more on the topic, just ask!