I love the idea of an easy way out. A vaccine would be real handy! And easy! I would deal with a needle for this!
Of course you would still have to diet and exercise. But anything would help.
http://news.yahoo.com/obesity-vaccine-could-help-fight-battle-bulge-154700779.html
According to a press release on July 8 on the new research, the vaccine works by stimulating the immune system to attack a hormone that promotes slow metabolism and weight gain.