Aspartamul; e cazul să te îngrijorezi?
31 Ian 2011
Dupa polemica din jurul bisfenolului A, i-a venit si randul aspartamului!
Doua studii recente evidentiaza nocivitatea aspartamului, corelandu-l cu riscul de nastere prematura, cancer la ficat si cancer pulmonar.
Nocivitatea aspartamului – doua studii noi relanseaza dezbaterea.
Aspartamul este un indulcitor artificial utilizat mai ales de femei in cadrul regimurilor de slabit (introdus in guma de mestecat si alimentele light), insa el este prezent si in compozitia unor medicamente.
Doua studii prezentate simultan relanseaza dezbaterile asupra nocivitatii acestui indulcitor, pana acum tolerat si considerat nepericulos deoarece era o molecula noua, insuficient studiata.
– Primul studiu arata ca prin consumul de aspartam creste riscul de nastere prematura si cancer de ficat si plamani. Studiul danez a fost realizat pe un esantion de peste 59.000 femei. Cercetatorii au scos in evidenta pericolele asociate cu consumul de sucuri carbogazoase indulcite cu edulcoranti.
Studiul arata ca femeile care au consumat acest tip de bauturi racoritoare au avut, in medie, 38% risc suplimentar de a naste un copil prematur (27% cu un suc pe zi, 35% cu 2-3 sucuri consumate si 78% cu un consum de mai mult de 4 bauturi racoritoare pe zi).
Realizat de cercetatorii italieni, al doilea studiu releva urmatorul fapt: consumul de aspartam creste riscul de cancer la ficat si cancer pulmonar pe termen lung. Studiul, efectuat pe soareci si sobolani confirma rezultatele a doua studii anterioare. Indulcitorul a marit riscul de cancer la ficat si cancer pulmonar la 240 de soareci de sex masculin (dar nu si la femele). Oare trebuie sa asteptam ca rezultatele sa se verifice si in cazul barbatilor?
Aspartamul – e cazul sa te ingrijorezi?
Cele doua studii recente suscita numeroase reactii de ingrijorare. Ar trebui sa se interzica oare bauturile light, gumele de mestecat fara zahar si iaurturile indulcite artificial? Toate contin aspartam!
In prezent, doza zilnica admisibila este de 40 mg/ kg corp/ zi. Va fi ea modificata in viitor?
Numeroase intrebari raman inca fara raspuns, asa ca vom mai auzi despre aspartam…
The Not-So-Sweet Truth About Aspartame
By Ronnie Koenig Jul 12th 2010 1:29PM
Categories: Healthy Eating
Aspartame is an artificial sweetener found in many of the foods we consume every day, including soft drinks, chewing gum, breakfast cereals and jams. Even though it is FDA approved, many dietitians and nutritionists warn against its use, wary of the claim that it can deliver the taste of sugar without any of the health drawbacks.
Official complaints to the FDA about aspartame use include headaches and gastrointestinal problems. Detractors like Dr. Joseph Mercola, author of „Sweet Deception,” say that aspartame consumption can actually contribute to weight gain and even cause neurological side effects such as migraines and brain tumors due to a disturbance of the dopamine and serotonin balance.
An aspartame producer has recently rebranded the product under a new name, AminoSweet, which sounds healthy (amino acids are the building blocks of protein), but is it?
Marissa Lippert, a registered dietitian and a New York City nutritionist and author of „The Cheater’s Diet,” says that although the research is inconclusive regarding the long-term health risks of aspartame, people should think twice about consuming it.
„Saccharin has been linked to cancer,” says Lipper. „Artificial sweeteners like aspartame can indeed cause digestive distress (bloating, diuretic effects, diarrhea, etc.). Bottom line: It’s still an artificially/chemically processed item.”
In her practice, Nourish Nutrition Counseling & Communications, Lippert recommends her clients eschew „fake foods” in favor of an all-natural diet.
If a product is labeled „sugar free,” „no sugar added” or „light,” it most likely contains aspartame or some type of artificial sweetener. While Diet Coke and Diet Pepsi are obvious culptrits, you may be surprised that some seemingly healthy foods, like most nonfat, flavored yogurts(including some varieties of Dannon’s Light & Fit), contain aspartame.
Even some of the most trusted brands are adding the controversial sweetener to their foods. Smucker’s Sugar Free Breakfast Syrup has it, as do the company’s light and sugar-free strawberry preserves. Tofutti chocolate fudge treats and Edy’s Grand Fat Free No Sugar Added Vanilla Swirl also contain aspartame.
Dieters have long believed that the best way to reduce their waistlines was to eat „light” or artificially sweetened foods instead of those containing sugar. Although it seems counterintuitive, it may actually be more beneficial to weight loss to eat a small amount of real ice cream than the lower-calorie stuff.
„Research is now indicating that sweeteners may actually cause people to gain weight because of a negative metabolic response,” says Lippert. „They can also increase sweet cravings and alter our taste buds in terms of our ‘threshold’ for sweetness. Aspartame is 200 times sweeter than sugar, and Splenda is 600 times sweeter.”
So if you’re a four-can-a-day diet soda drinker, do you have a chance of kicking the aspartame habit?
„I actually help clients to wean themselves off of sweeteners and even the biggest addicts can be successful,” says Lippert. „Switch to natural sources of sweetness – fresh fruit, honey, sugar in the raw, agave nectar. Flavored seltzer and flavored unsweetened iced tea is a great way to swap your diet soda for something other than regular water. Retrain your taste buds to appreciate natural sweetness, and you’ll feel and taste a significant difference.”
Pros and Cons of Artificial Sweeteners
By Mary Kearl Nov 5th 2009 3:55PM
Americans love fake sugar – 180 million Americans use low-calorie and sugar-free foods and beverages according to a 2004 Calorie Control Council survey. But just how safe are these artificial sweeteners and low-calorie sugar substitutes? The U.S. Food and Drug Administration (FDA) has approved five artificial sweeteners. How do they compare to sugar? Find out more here.
Sold under the brand names NutraSweet and Equal, this sweetener is about 180-220 times sweeter than sugar and has an acceptable daily intake (ADI) at 3,500 milligram/person/day (mg/p/d) or 18 to 19 cans of diet soda, as set by the FDA. Aspartame is not recommended for people with phenylketonuria (PKU) since they cannot metabolize it. It can not be used in baking. Continue reading to learn about more FDA-approved artificial sweeteners.
Sold as Sweet N Low and Sugar Twin, this sweetener is about 300 times sweeter than sugar, has an ADI of 5mg or nine to 12 packets of sweetener, and is heat stable so it can be used in baking.
This sweetener you’ll recognize under the brand name Splenda is about 600 times sweeter than sugar, has an ADI of 350 mg/p/d or about 6 cans of diet soda and can be used a general-purpose sweetener for all foods.
4. Acesulfame K
Sweet One and Sunett are the brand names for the sugar substitute that is about 200 times sweeter than sugar, has an ADI of 1050 mg/p/d or 30 to 32 cans of diet soda, and is suitable for baking and cooking.
This sweetener is about 8,000 times sweeter than sugar, has an ADI of 1,260 mg/p/d and can be used for baking.
Next: discover the positive and negative effects artificial sweeteners can have on your diet and health.
Help Reduce Daily Calories
The American Diabetes Association refers to these substances as „free foods” because they make food taste sweet, are essentially zero-calorie substances and do not raise blood sugar levels. Can they help shed pounds? By subbing the sugary or calorie-containing version of your favorite snacks and drinks for diet or calorie-free versions, you can shave hundreds of calories from your meals.
New findings indicate that swapping sugar (calories) for fake sugar (no calories) may not be the best diet trick. Eating artificially sweetened foods may actually make you eat more than you would have had you eaten the regular version. Experiments conducted at Purdue University Investigative Behavior Research Center found that a group of rats fed saccharin-sweetened yogurt ate more calories, gained more weight and put on more body fat than a group fed yogurt sweetened with sugar. The study’s authors explain that artificial sweeteners may affect the body’s ability to regulate calorie intake and metabolism.
Aid Safe Weight Loss
Chewing sugar-free gum may help you burn calories and lose weight, according to a Mayo Clinic study conducted in 1999. The results found that chewing sugar-free gum at 100 chews per minute can raise a person’s metabolic rate by approximately 20 percent, and someone chewing gum all day could be burning at a rate of 11 pounds a year.
May Take Weight Loss Too Far
Chewing too much sugar-free gum with the artificial sweetener sorbitol can cause chronic diarrhea, which has lead to extreme weight loss in two cases reported in the British Medical Journal. Fortunately, in the U.S. most sugar-free gum is made with aspartame which does not have this side effect. In one of the cases, the person was consuming up to 200 grams of sweetener a day – 150 grams more than the amount that the FDA says is associated with danger of diarrhea.
Protect Oral Health
Replacing sugary foods with sugar-free substitutes can potentially prevent cavities, says the American Dietetic Association (ADA). Plus, clinical studies have found that chewing sugarless gum for 20 minutes following meals can help prevent tooth decay, says the ADA. This activity can help neutralize and dilute tooth-decaying effects of acids from soda, energy drinks, tart candies, citrus fruits and foods containing vinegar. Chewing sugary gum can also stimulate saliva production but in turn, plaque bacteria use the sugar to make more decay-causing acids!
Help Diabetics Maintain Blood Sugar Levels
People with diabetes may use these because they add a sweet taste without raising blood sugar levels. Artificial sweeteners can be a supplement to a meal plan instead of substituted, says the American Diabetic Association. Sugar alcohols like sorbitol, maltitol and xylitol are reduced-calorie sweeteners that have about half the calories of sugars and other carbs. These don’t raise blood glucose as much as the equivalent amount of other carbs but diabetics still must keep track of their intake.
Are Not Always Part of Low-Calorie Foods
Just because a package says sugar-free doesn’t automatically make it a „healthy food.” Sugar-free cookies and candies can still be loaded with calories or fat grams. Some sugar-free versions of foods have more of both of these than in their regular counterparts because they usually still contain carbs (which diabetics should be aware of) and dairy products.
Can Reduce Risk of Disease
Sugar intake has been linked to a variety of health concerns. So what affect does swapping sugar with an artificial substitute? As with limiting problems with tooth decay and diabetes, sugar substitutes seems to be associated with reduce risk of gout in men, according to a recent study published in the ‘British Medical Journal.’ The study found risk of gout increased with a higher consumption of sugary sodas, while men who drank diet soft drinks were not associated with any gout risk.
Are No Longer Associated with Cancer Risk
Of the FDA approved artificial sweeteners, saccharin and aspartame were the only associated with cancer risk. In the 1970s studies linked saccharin to bladder cancer in rats and questions of causing cancer in humans were raised. No clear evidence of a risk for human bladder was found, according the National Cancer Institute (NCI). After FDA approval, later studies suggested an increase rate in brain tumors in humans, and lymphomas and leukemias in rats might be associated with the aspartame consumption. No evidence supports these claims, however, says the NCI. Acesulfame K, Sulacrose and Neotame were all approved by the FDA after more than 100 safety studies were conducted on each sweetener.