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Dr. Mark Hyman: Why You Should Ditch Artificial Sweeteners
“I know you’re not big on sugar and frequently tell people to cut down on it,” writes this week’s House Call. “But what about artificial sweeteners? Can I use those instead?”
Sadly, the answer is emphatically no. Human, animal, experimental and other studies show artificial sweeteners can be just as bad and maybe even worse than regular sugar.
Artificial sweeteners have long been positioned as “guilt-free,” innocuous, safe alternatives, so why would I argue they are actually worse than sugar?
Photo credit: Shutterstock
Manufacturers love to position zero-calorie sweetened foods and drinks as better because they create a “halo effect” and they know you’re more likely to buy them.
We’re surrounded by low-calorie or calorie-free foods and diet soft drinks that contain artificial sweeteners touted as healthy or consequence-free. As a result, the number of Americans who consume products that contain sugar-free sweeteners grew from 70 million in 1987 to 160 million in 2000.
At the same time, the incidence of obesity in the U.S. has doubled from 15 percent to 30 percent across all age groups, ethnic groups and social strata. And the number of overweight Americans has increased from about 30 percent to more than 65 percent of the population. The fastest growing obese population is children.
High sugar intake deservedly takes the blame here, but we frequently overlook artificial sweeteners as a potential culprit. The evidence is catching up. Recent studies have not been kind to artificial sweeteners, claiming among other problems they adversely affect gut health and glucose tolerance.
You’re probably wondering, though, how a calorie-free sweetener could make you fat. If you’ve read my blogs, you know that while calories count, other factors like hormonal imbalances contribute far more to weight gain.
Let’s briefly look at three reasons artificial sweeteners create adverse consequences to your waistline and health.
1. Artificial sweeteners increase your risk for diabesity. Studies show sugar substitutes potentially can increase your risk for weight gain, metabolic syndrome, type 2 diabetes and cardiovascular disease. One study of rats that were fed artificially sweetened food found that their metabolism slowed down and they were triggered to consume more calories and gain more weight than rats fed sugar-sweetened food. In another animal study, rats that consumed artificial sweeteners ate more food, their metabolic fire or thermogenesis slowed down and they put on 14 percent more body fat in just two weeks even if they ate fewer total calories than the rats that ate regular sugar-sweetened food.
2. Artificial sweeteners rewire your brain chemistry and metabolism. How could aspartame and other fake sweeteners make you gain weight even though they’re calorie-free? Because they stimulate your taste buds and trick them to think you’re eating real sugar. Artificial sweeteners can be 1000 times sweeter than sugar, so your body becomes confused and revs up production of insulin, your fat-storage hormone. Your metabolism slows down, you become hungry more quickly, you’re prone to eat way more food (especially carbs) and increased belly fat is the inevitable result. Because they confuse and slow down your metabolism, you burn fewer calories every day. Artificial sweeteners make you hungrier and cause you to crave even more sugar and starchy carbs, such as bread and pasta.
3. Artificial sweeteners are highly addictive. I regularly see patients who complain they can’t kick their diet-soda habit. “I have one in the morning and I can’t stop,” they say. It isn’t just their imagination: Artificial sweeteners can quickly become addictive. In an alarming study, rats offered the choice of cocaine or artificial sweeteners always picked the artificial sweetener, even if the rats were previously programmed to be cocaine addicts. The author of the study said that, “The absolute preference for taste sweetness may lead to a re-ordering in the hierarchy of potentially addictive stimuli, with sweetened diets … taking precedence over cocaine and possibly other drugs of abuse.”
Let’s consider that last point a little more closely, particularly with diet sodas, which account for a fair amount of the artificial sweeteners we consume.
One of the biggest struggles I see with patients—ironically, usually overweight or obese patients—is surrendering their diet sodas. Like artificial sweeteners, we’ve been misled to think they’re guilt-free alternatives to regular soda.
Hardly. Diet soda and diet drinks make you fat and cause type 2 diabetes.
Wait … diet soda makes people fat? Really? How does that happen?
If losing weight were all about the calories, then consuming diet drinks would seem like a good idea. That’s certainly what big-name cola companies want us to believe, judging by the ad campaigns highlighting their efforts to fight obesity. (And the other food giants making diet drinks push the same propaganda).
Soda companies proudly promote the fact that it has 180 low- or no-calorie drinks and that it has cut sales of sugared drinks in schools by 90 percent. Is that a good thing? I don’t think so. In fact, it may be worse to drink diet soda than a regular soda.
A 14-year study of 66,118 women published in the American Journal of Clinical Nutrition (and supported by many previous and subsequent studies) discovered some frightening facts that should make us all swear off diet drinks and products:
Diet sodas raised the risk of diabetes more than sugar-sweetened sodas.
Women who drank one 12-ounce diet soda a week had a 33 percent increased risk of type 2 diabetes and women who drank one 20-ounce soda a week had a 66 percent increased risk.
Women who drank diet sodas drank twice as much as those who drank sugar-sweetened sodas because artificial sweeteners are more addictive than regular sugar. The average diet soda drinker consumes three diet drinks a day.
The bottom line is you can’t outsmart Mother Nature. Fooling your brain into thinking you are getting something sweet plays dirty tricks on your metabolism. Artificial sweeteners disrupt the normal hormonal and neurological signals that control hunger and satiety (feeling full).
The use of artificial sweeteners, as well as “food porn,” the sexy experience of sweet, fat and salt in your mouth, alters your food preferences. Your palate shifts from being able to enjoy fruits and vegetables and whole foods to liking only the sexy stuff.
Sugar or Artificial Sweeteners: What’s the Answer?
Let’s be clear here that I am not letting sugar off the hook. Of the more than 600,000 food products—note I said food products, not foods—80 percent have added sugar. That’s where the trouble begins.
We went from eating about 10 pounds of sugar per person, per year in 1800 to 152 pounds of sugar (and 146 pounds of flour) per person, per year today. Think about it: On average we eat about one pound of sugar every day!
Those sugar-laden foods literally become drugs: Pharmacological doses that hijack our metabolism and make us fat and sick.
Adding a teaspoon of sugar to your coffee or having an occasional dessert doesn’t make you fat and sick. Added sugars in even so-called healthy foods or non-sweet tasting foods creates the real, cumulative damage.
I realize this can all become confusing. Here are five ways I recommend making sense about sweeteners:
1. Have a little. If you like sugar and want a little bit, fine, but eat real food and then have sweet things. Consider sugar a recreational drug that you can partake of in moderation like red wine or tequila. Put a little sugar in your coffee because at least you’re aware about how much you’re getting. Likewise, you’re not going to overeat cake, because you know it’s bad for you. One caveat: If you know a little sugar will become a slippery slope for overeating, stay away from the sweet stuff period.
2. Become aware of hidden sugars even in so-called healthy foods. Read ingredients and realize sugar lurks even in foods that don’t taste sweet or that are positioned as healthy.
3. Learn to appreciate natural sweetness. Fruit, nuts and other real foods contain natural sweetness without processed foods’ sugar overload or the detrimental effects of artificial sweeteners.
4. Stop confusing your body. If you have a desire for something sweet have a little sugar, but stay away from “fake” foods. Eating a whole-foods diet that has a low-glycemic load and is rich in phytonutrients and indulging in a few real sweet treats once in a while is a better alternative than tricking your body with artificial sweeteners, which leads to wide scale metabolic rebellion and obesity.
5. Judiciously use this one sweetener. Among sweeteners, I make one exception with stevia. A little bit in your coffee or tea should be fine, but be judicious. Besides, overdoing stevia creates a bitter effect, so you’re more likely not to get carried away. If you partake, make sure you’re buying 100 percent pure organic stevia, not the stuff that contains bulking agents like maltodextrin (corn) and nebulous natural flavors.
If you really want to break free from the addictive grip of artificial sweeteners and sugar, as well as food sensitivities, I highly recommend doing The Blood Sugar Solution 10-Day Detox Diet. I’ve witnessed patients curb their worst sugar and artificial sweetener cravings and learn to appreciate the natural sweetness of real, whole foods in just 10 days.
Whatever you do, stay away from artificial sweeteners. I recommend giving up aspartame, sucralose, sugar alcohols such as xylitol and maltitol and all of the other heavily used and marketed sweeteners unless you want to slow down your metabolism, gain weight and become an addict. Use a little stevia if you must, but skip out on the others.
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Anti-pipeline protests work.
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