A recent study found that the artificial sweeteners used in many diet and zero-sugar products may have an unintended side effect: memory loss, particularly among younger consumers. But even though the study found a significant link between sweeteners and memory issues, experts say this is a correlation, not causation.
Several widely used artificial sweeteners may be “associated with faster declines in memory and thinking skills over time,” according to the study published by the American Academy of Neurology. It followed 12,772 adults in Brazil for about eight years and examined their intake of seven sugar substitutes: aspartame, saccharin, acesulfame K, erythritol, xylitol, sorbitol and tagatose. These are “frequently added to ultra-processed products, including flavored water, soft drinks, energy drinks, yogurt and desserts marketed as low in calories.”
Researchers found that the people who consumed the highest amount of artificial sweeteners “experienced a 62% faster rate of cognitive decline than those with the lowest intake,” said USA Today, a rate “estimated to be comparable to about 1.6 additional years of brain aging.” People who were in the mid-range of consumption “experienced cognitive decline that was 35% faster than those in the lowest-intake group.” The memory loss was most prevalent in study participants under 60.
“Low- and no-calorie sweeteners are often seen as a healthy alternative to sugar,” said the lead study author, Dr. Claudia Kimie Suemoto of Brazil’s University of Sao Paulo, in a press release. “However, our findings suggest certain sweeteners may have negative effects on brain health over time.”
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