Junk food and tape measure. Conceptual computer artwork of junk food and a tape measure. This represents the obesity that can result from an excessive diet of food such as the cheeseburgers and chips seen here. Cheese, fried meat and fried potatoes contain high levels of fat, which can cause obesity when combined with a lack of exercise. The soft drinks often contain high levels of sugar, which increases the amount of calories being consumed. Obesity can increase the risk of a range of other health problems, such as some forms of diabetes, strokes, and heart disease.