Drinking a reasonable amount of diet soda a day, such as a can or two, isn't likely to hurt you. The artificial sweeteners and other chemicals currently used in diet soda are safe for most people, and there's no credible evidence that these ingredients cause cancer.
Some types of diet soda are even fortified with vitamins and minerals. But diet soda isn't a health drink or a silver bullet for weight loss.
Although switching from regular soda to diet soda may save you calories, it's not yet clear if it's effective for preventing obesity and related health problems in the long term.
Healthier low-calorie choices abound, including water, skim milk, and unsweetened tea or coffee.
Nov. 30, 2018
- Artificial sweeteners and cancer. National Cancer Institute. http://www.cancer.gov/about-cancer/causes-prevention/risk/diet/artificial-sweeteners-fact-sheet. Accessed July 3, 2018.
- Mooradian AD, et al. The role of artificial and natural sweeteners in reducing the consumption of table sugar: A narrative review. Clinical Nutrition ESPEN. 2017;18:1.
- Lohner S, et al. Health outcomes of non-nutritive sweeteners: Analysis of the research landscape. Nutrition Journal. 2017;16:55.
- Zeratsky KA (expert opinion). Mayo Clinic, Rochester, Minn. Nov. 21, 2018.
- Yu E, et al. Cardiovascular disease prevention by diet modification. Journal of the American College of Cardiology. 2018;8:914.
- High-intensity sweeteners. U.S. Food and Drug Administration. https://www.fda.gov/food/ingredientspackaginglabeling/foodadditivesingredients/ucm397716.htm. Accessed July 3, 2018.