Are we doomed to be obese due to heredity and current conditions? And is this article still relevant?

While heredity may play as a factor in obesity, people are strong-willed human beings. People can make choice and do so everyday. People can choose not to eat unhealthy foods. And while there is plenty of advertising geared toward fast-food, there is also a lot of education out there regarding healthy foods. Additionally, today's food system has improved slightly, but not enough to make a difference.