It turns out exercise won’t erase the harmful effects of an unhealthy diet. In a new study published in the British Journal of Sports Medicine, researchers at the University of Sydney in Australia examined the diets and exercise patterns of more than 360,000 British adults over 11 years. They considered a “bad diet” to be one with low fruit and vegetable intake, no fish, and a lot of red meat and processed meats. Not surprisingly, people with high levels of physical activity and a high-quality diet had a much lower risk of death from any cause and were less likely to die from cardiovascular disease and from certain cancers. The poor diet was most associated with mortality risk. In people with poor diets, exercise did not help that much. If you want to be as healthy as possible, it is crucial to follow a healthy lifestyle, eating both healthy foods and exercising on a regular basis.