Artificial sweeteners have toxic effects on gut microbes
Source: American Associates, Ben-Gurion University of the Negev
FDA-approved artificial sweeteners and sport supplements were found to
be toxic to digestive gut microbes, according to a new paper published
in Molecules by researchers at Ben-Gurion University of the Negev (BGU)
in Israel and Nanyang Technological University in Singapore.
The collaborative study indicated relative toxicity of six artificial
sweeteners (aspartame, sucralose, saccharine, neotame, advantame, and
acesulfame potassium-k) and 10 sport supplements containing these
artificial sweeteners. The bacteria found in the digestive system became
toxic when exposed to concentrations of only one mg./ml. of the
artificial sweeteners.
"We modified bioluminescent E. coli bacteria, which luminesce when they
detect toxicants and act as a sensing model representative of the
complex microbial system," says Prof. Ariel Kushmaro, John A. Ungar
Chair in Biotechnology in the Avram and Stella Goldstein-Goren
Department of Biotechnology Engineering, and member of the Ilse Katz
Institute for Nanoscale Science and Technology and the National
Institute for Biotechnology in the Negev. "This is further evidence that
consumption of artificial sweeteners adversely affects gut microbial
activity which can cause a wide range of health issues."
Artificial sweeteners are used in countless food products and soft
drinks with reduced sugar content. Many people consume this added
ingredient without their knowledge. Moreover, artificial sweeteners have
been identified as emerging environmental pollutants, and can be found
in drinking and surface water, and groundwater aquifers.
"The results of this study might help in understanding the relative
toxicity of artificial sweeteners and the potential of negative effects
on the gut microbial community as well as the environment.
Furthermore, the tested bioluminescent bacterial panel can potentially
be used for detecting artificial sweeteners in the environment," says
Prof. Kushmaro.
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