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The dark side of artificial sweeteners?

More and more people are consuming artificial sweeteners as an alternative to sugar, but the debate on whether this translates into better health continues. An opinion article published by Cell Press on July 10 in the journal Trends in Endocrinology & Metabolism reviews evidence on the negative impact of artificial sweeteners on health, raising red flags about all sweeteners – even those that don’t have any calories.

“It is not uncommon for people to be given messages that artificially-sweetened products are healthy, will help them lose weight or will help prevent weight gain,” says author Susan E Swithers of Purdue University.

“The data to support those claims is not very strong, and although it seems like common sense that diet sodas would not be as problematic as regular sodas, common sense is not always right.”

Consumption of sugar-sweetened drinks has been linked to obesity, type 2 diabetes, and metabolic syndrome – a group of risk factors that raises the risk for heart disease and stroke. As a result, many Americans have turned to artificial sweeteners, which are hundreds of times sweeter than sugar but contain few, if any, calories.

However, studies in humans have shown that consumption of artificially sweetened beverages is also associated with obesity, type 2 diabetes, and metabolic syndrome as well as cardiovascular disease. As few as one of these drinks per day is enough to significantly increase the risk for health problems.

Moreover, people who regularly consume artificial sweeteners show altered activation patterns in the brain’s pleasure centers in response to sweet taste, suggesting that these products may not satisfy the desire for sweets.

Similarly, studies in mice and rats have shown that consumption of noncaloric sweeteners dampens physiological responses to sweet taste, causing the animals to overindulge in calorie-rich, sweet-tasting food and pack on extra pounds.

Taken together, the findings suggest that artificial sweeteners increase the risk for health problems to an extent similar to that of sugar and may also exacerbate the negative effects of sugar.

“These studies suggest that telling people to drink diet sodas could backfire as a public health message,” Swithers says. “So the current public health message to limit the intake of sugars needs to be expanded to limit intake of all sweeteners, not just sugars.”

Journal Reference:

Trends in Endocrinology & Metabolism, Swithers et al.: “Artificial sweeteners produce the counterintuitive effect of inducing metabolic derangements.”

Click here for more

Additional reading:

Study shows sucralose affects blood sugar and insulin levels

Do diet sodas cause obesity? Er…no!

Commentary by James Cooper, Examiner.com – In recent days the sensationalist press has been all over a paper by Professor Susan Swithers of Purdue “Artificial sweeteners produce the counterintuitive effect of inducing metabolic derangements.”

… It’s not a research paper, it’s an opinion piece and is clearly marked “Opinion”. The paper was officially published in Trends in Endocrinology and Metabolism, again clearly marked “opinion.” And to top it off, it’s not even in their table of contents. In fact, it’s not indexed in PubMed either since it is not a research paper.

Swithers, who is a psychologist, is presumably interested in the behavioural aspects of people consuming artificial sweeteners, but she has picked papers to support her claim rather than carry out an exhaustive review. In fact, she says in the paper’s introduction….

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