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Published in the International Journal of Obesity, University of Minnesota Medical School and School of Public Health researchers led a study on the relationship between dietary intake and cardiovascular disease risk factors.
Over 20 years, the research team examined people’s regular dietary intake, paying particular attention to non-nutritive sweeteners commonly found in artificial sweeteners. They found that long-term consumption of aspartame, saccharin and diet beverages were linked to increased fat stores in the abdomen and fat within muscle. However, the study found no significant association between the artificial sweetener sucralose and these measures of fat volume.
“This study showed that habitual, long-term intake of total and individual artificial sweetener intakes are related to greater volumes of adipose tissue, commonly known as body fat,” said Brian Steffen, PhD, MSCR, a professor in the Department of Surgery at the U of M Medical School and co-investigator on the funded grant. “This was found even after accounting for other factors, including how much a person eats or the quality of one’s diet.”
The study’s findings raise concerns about the recommendations from the American Diabetes Association and the American Heart Association that promote the replacement of added sugars with artificial sweeteners. Based on their results, the researchers recommend considering alternative approaches, as long-term artificial sweetener consumption may have potential health consequences.
“This is an especially timely study, given the World Health Organization’s recent warning of the potential health risks of aspartame,” said Lyn Steffen, PhD, MPH, a professor in the School of Public Health and principal investigator on the study. “These findings underscore the importance of finding alternatives to artificial sweeteners in foods and beverages, especially since these added sweeteners may have negative health consequences.”
The researchers emphasize the need for more studies to better understand the connection between artificial sweetener intake and increased body fat. Further research is warranted to explore the underlying mechanisms and gain clearer insights into how dietary habits affect metabolic health.
The study was funded by the National Institutes of Health and the National Heart, Lung and Blood Institute under grant numbers R21 HL135300 and R01 HL150053, as well as by contracts from the NIH/NHLBI funding the four field centers.