A few examples of foods often considered to be junk food include fast food, sweets such as ice cream, candy, donuts, and prepackaged treats, soda, and potato chips, among many others.
Some experts suspect that the link between obesity and junk food may be largely due to the lower price of fast food and junk food products. The low price of junk food makes it more affordable than healthy foods, meaning that low-income people are often considered at increased risk for obesity.