Yes, you can blame someone else.

BBC Two is showing The Men Who Made Us Fat:

Around the world, obesity levels are rising. More people are now overweight than undernourished. Two thirds of British adults are overweight and one in four of us is classified as obese. In the first of this three-part series, Jacques Peretti traces those responsible for revolutionising our eating habits, to find out how decisions made in America 40 years ago influence the way we eat now.

Peretti travels to America to investigate the story of high-fructose corn syrup. The sweetener was championed in the US in the 1970s by Richard Nixon's agriculture secretary Earl Butz to make use of the excess corn grown by farmers. Cheaper and sweeter than sugar, it soon found its way into almost all processed foods and soft drinks. HFCS is not only sweeter than sugar, it also interferes with leptin, the hormone that controls appetite, so once you start eating or drinking it, you don't know when to stop.

Now you know WHO to blame!