Commonly used sweeteners can directly interfere with the growth of bacteria that help support a healthy gut, according to laboratory research from the University of Cambridge.
The strongest effect appeared when researchers combined isosteviol, a sweetener used by the food and beverage industry, with the antidepressant duloxetine. Together, the two compounds sharply reduced the growth of two important bacterial species associated with digestive health, blood sugar regulation, and immune function.
The scientists caution that the experiments were conducted in a laboratory rather than in people. More research will therefore be needed to determine whether the bacterial changes lead to meaningful health effects under real-world conditions.
Sweeteners May Not Be Biologically Inactive
Sweeteners are found in countless everyday products, including soft drinks, candy, desserts, breakfast cereals, snacks, and some medications. They are commonly promoted as alternatives that provide sweetness with less sugar or fewer calories.
