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Published on: 7/21/2026
Diet is a leading driver of the obesity epidemic. Diets high in calorie-dense foods—such as fast food, sugary drinks, and ultra-processed snacks—make it easy to consume more calories than the body needs. Over time, this calorie surplus leads to weight gain and increases the risk of obesity-related conditions like type 2 diabetes, heart disease, and high blood pressure.
If you're concerned about your weight, eating habits, or related symptoms, understanding what's happening in your body is the first step toward better health. Take a free, instant, online symptom check to get personalized insights based on your symptoms and clear guidance on what to do next—no signup required.
Reviewed for medical accuracy: 07/20/2026
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Submit your own QuestionThe obesity epidemic is largely driven by changes in diet. People today consume more foods that are high in calories and low in nutrients, like fast food and sugary drinks. These foods are often more convenient and cheaper, making them a popular choice for many.
If you're concerned about how your diet may be affecting your health, take our free symptom checker to better understand your symptoms and get personalized guidance.
(References)
Meldrum DR, Morris MA, & Gambone JC. (2017). Obesity pandemic: causes, consequences, and solutions .... Fertility and sterility, 28292617.
Prentice AM, & Jebb SA. (2003). Fast foods, energy density and obesity: a possible .... Obesity reviews : an official journal of the International Association for the Study of Obesity, 14649369.
Crino M, Sacks G, Vandevijvere S, Swinburn B, & Neal B. (2015). The Influence on Population Weight Gain and Obesity .... Current obesity reports, 26627085.
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