Unhealthy food is cheaper  A reason why people eat unhealthy foods is that it’s often cheaper and easier than cooking something with fresh ingredients. Studies have shown that not only is junk food cheaper, its costs are less likely to increase due to inflation [14]. This was confirmed by research in Australia that showed that while healthy food became more expensive, junk food got cheaper [15].  Obesity is more common amongst poorer people. Because junk food is so cheap, it is eaten more. The best way to change this consumption pattern is to tax unhealthy food so that the healthy option is also the cheaper option.