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Diet Soda's and Metabolism

Posted by on Jul. 10, 2013 at 8:30 PM
  • 7 Replies

Do Diet Drinks Mess Up Metabolisms?

It may seem counterintuitive, but there's a body of evidence to suggest that the millions of Americans with a diet soda habit may not be doing their waistlines — or their blood sugar — any favors.

As the consumption of diet drinks made with artificial sweeteners continues to rise, researchers are beginning to make some uncomfortable associations with weight gain and other diseases.

For instance, as researcher Susan Swithers writes in a new opinion piece published in the journal Trends in Endocrinology and Metabolism, "accumulating evidence suggests that frequent consumers of these sugar substitutes (such as aspartame, sucralose, and saccharin) may also be at increased risk of ... metabolic syndrome, type 2 diabetes and cardiovascular disease."

If you listen to my conversation on Here & Now, you'll hear that there are two schools of thought here. Not everyone is convinced that diet soda is so bad.

For instance, a study I reported on last year by researchers at Boston Children's Hospital found that overweight teens did well when they switched from sugar-laden drinks to zero-calorie options such as diet soda.

But it's also hard to ignore the gathering body of evidence that points to potentially bad outcomes associated with a diet soda habit.

One example: the findings of the San Antonio Heart Study, which pointed to a strong link between diet soda consumption and weight gain over time.

"On average, for each diet soft drink our participants drank per day, they were 65 percent more likely to become overweight during the next seven to eight years" said Sharon Fowler, in a release announcing the findings several years back.

Another bit of evidence: A multi-ethnic study, which included some 5,000 men and women, found that diet soda consumption was linked to a significantly increased risk of both type-2 diabetes and metabolic syndrome.

So, what gives? How could consuming less sugar set the stage for more weight gain and an increased risk of disease?

Well, since being overweight is a major contributor to the development of type 2 diabetes, it's possible that some diet-soda drinkers suffer from a mindset problem: They justify eating lots of high-calorie foods because their drinks are calorie-free.

It's the "hey, I'll go ahead and have those fries and a cheeseburger, since I'm having a Diet Coke" mentality.

It's also possible that something much more complicated and nuanced is happening in the bodies and brains of diet soda drinkers.

As Swithers points out, "Frequent consumption of high-intensity [artificial] sweeteners may have the counterintuitive effect of inducing metabolic derangements."

Say what? Metabolic derangements?

One theory is that diet soda may throw off the metabolism by blunting the body's responses to sugar.

You see, from the moment sugar touches our lips, our bodies start to release hormones to begin processing the sugar. It's part of a feedback loop that helps the body predict what's coming.

But if we develop a habit of consuming artificial sugar, our bodies may get confused. And it might not respond the same when we consume real sugar. "We may no longer release the hormones" needed to process sugar — or at least, not as much of them as before, Swithers told me during an interview.

And researchers think this change in hormone levels could contribute to increases in how much we eat, says Swithers, "as well as to bigger spikes in our blood sugar, which may be related to things like diabetes."

Now, Swithers says much more research is needed to nail down what's happening when people consume artificial sweeteners.

What is clear is that diet soda consumption continues to rise. Women tend to lead the way, and increasingly, children are popping open the calorie-free sodas that mom and dad are drinking.

Update: After we published our post, we received this statement from the American Beverage Association:

"Low-calorie sweeteners are some of the most studied and reviewed ingredients in the food supply today. They are safe and an effective tool in weight loss and weight management, according to decades of scientific research and regulatory agencies around the globe."

by on Jul. 10, 2013 at 8:30 PM
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Replies (1-7):
TiffanyD78
by on Jul. 12, 2013 at 3:14 PM
2 moms liked this
Artificial sweeteners and diet sodas are TERRIBLE for you. It's processed garbage!! When are people going to realize this. Every time I see someone with a diet soda I want to run over and save them from drinking it. It's bad news people! No pop is good for you but diet sodas are worse for you than regular pop.
Alyson121
by Alyson on Jul. 12, 2013 at 3:35 PM

Exactly.  Did you read the UPDATE at the end of the article from the American Beverage Association? Hilarious. 

Quoting TiffanyD78:

Artificial sweeteners and diet sodas are TERRIBLE for you. It's processed garbage!! When are people going to realize this. Every time I see someone with a diet soda I want to run over and save them from drinking it. It's bad news people! No pop is good for you but diet sodas are worse for you than regular pop.


TiffanyD78
by on Jul. 12, 2013 at 5:34 PM
Yes I did! Absolutely absurd! All I could do was laugh. Sad part is some people will believe that statement. 😔
LindaClement
by Gold Member on Jul. 27, 2013 at 2:43 AM

I'd pretend I'm surprised, but I've been reading the research about these products since they were allowed by the FDA.

I don't use any kind of artificial sweetener. If I want sweet food, I eat it.

Strangely (or maybe not, if you follow the research) I don't have much of a sweet tooth :D

Barabell
by Bronze Member on Aug. 2, 2013 at 1:32 PM

Interesting article. Thanks for sharing.

GypsiSky
by on Aug. 2, 2013 at 2:22 PM
1 mom liked this

We don't drink sodas of any sort

GypsiSky
by on Aug. 2, 2013 at 2:23 PM
1 mom liked this

Oh and artificial sweetners are not something we choose to consume.

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