Disturbing side effects of soda
Soda’s Bittersweet Side Effects
If you’ve been reading health magazines and websites for any length of time, you’ve read a litany of reasons why soda is bad for you. It’s nothing but sugar water. It’s devoid of any nutritional value. It leads to obesity and diabetes. But we’ve dug up other disturbing facts about what soda does to your body, besides packing on the pounds, that don’t get much attention in broader discussions about soda and its impact on your health.
Weird Fat in Weird Places
In the latest bad news for the soda industry, Danish researchers discovered that drinking non-diet soda leads to dramatic increases in fat buildup around your liver and your skeletal muscles, both of which can contribute to insulin resistance and diabetes. The study revealed that people who drank a regular soda every day for six months saw a 132 to 142 percent increase in liver fat, a 117 to 221 percent jump in skeletal fat, and about a 30 percent increase in both triglyceride blood fats and other organ fat. Their consumption also led to an 11 percent increase in cholesterol, compared with the people who drank other beverages such as water or milk.
It’s not surprising that drinking all the sugar in sodas would cause weight gain, but what is surprising is that even diet soda will pack on the pounds: Researchers from the University of Texas Health Science Center monitored 475 adults for 10 years, and found that those who drank diet soda had a 70 percent increase in waist circumference over the 10-year study, compared with those who didn’t drink any soda. Those who drank more than two diet sodas per day saw a 500 percent waist expansion! A separate study the same researchers conducted on mice suggested that it was the aspartame, which raised blood glucose levels, that caused the weight gain; when your liver encounters too much glucose, the excess is converted to body fat.
In 2011, the nonprofit Center for Science in the Public Interest petitioned the Food and Drug Administration to ban the artificial caramel colouring used to make Coke, Pepsi, and other colas brown. The reason: Two contaminants in the coloring, 2-methylimidazole and 4-methylimidazole, have been found to cause cancer in animals, a threat the group says is unnecessary, considering that the colouring is purely cosmetic. According to California’s strict Proposition 65 list of chemicals known to cause cancer, just 16 micrograms per person per day of 4-methylimidazole is enough to pose a cancer threat, and most popular brown colas, both diet and regular, contain 200 micrograms per 20-ounce bottle.
Diet or regular, all colas contain phosphates, or phosphoric acid, a weak acid that gives colas their tangy flavour and improves their shelf life. Although it exists in many whole foods, such as meat, dairy, and nuts, too much phosphoric acid can lead to heart and kidney problems, muscle loss, and osteoporosis, and one study suggests it could trigger accelerated aging. The study, published in a 2010 issue of the FASEB Journal, found that the excessive phosphate levels found in sodas caused lab rats to die a full five weeks earlier than the rats whose diets had more normal phosphate levels–a disturbing trend considering that soda manufacturers have been increasing the levels of phosphoric acid in their products over the past few decades.
The artificial sweeteners used in diet sodas don’t break down in our bodies, nor do wastewater-treatment plants catch them before they enter waterways, researchers have found. In 2009, Swiss scientists tested water samples from wastewater-treatment plants, rivers and lakes in Switzerland and detected levels of acesulfame K, sucralose, and saccharin, all of which are, or have been, used in diet sodas. A recent test of 19 municipal water supplies in the U.S. revealed the presence of sucralose in every one. It’s not clear yet what these low levels are doing to people, but past research has found that sucralose in rivers and lakes interferes with some organisms’ feeding habits.
Mountain Dew Mind
Dentists have a name for the condition they see in kids who drink too much Mountain Dew. They wind up with a “Mountain Dew Mouth,” full of cavities caused by the drink’s excessive sugar levels. “Mountain Dew Mind” may be the next medical condition that gets named after the stuff. An ingredient called brominated vegetable oil, or BVO, added to prevent the flavoring from separating from the drink, is an industrial chemical used as a flame retardant in plastics. Also found in other citrus-based soft drinks and sports drinks, the chemical has been known to cause memory loss and nerve disorders when consumed in large quantities. Researchers also suspect that, like brominated flame retardants used in furniture foam, the chemical builds up in body fat, possibly causing behavioral problems, infertility, and lesions on heart muscles over time.
It’s not just the soda that’s causing all the problems. Nearly all aluminum soda cans are lined with an epoxy resin called bisphenol A (BPA), used to keep the acids in soda from reacting with the metal. BPA is known to interfere with hormones, and has been linked to everything from infertility to obesity and diabetes and some forms of reproductive cancers. The Centers for Disease Control and Prevention have pegged soda cans, along with restaurant, school, and fast-food meals, as a major source of exposure to the chemical. And while Pepsi and Coke are currently locked in a battle to see which company can be the first to develop a 100 percent plant-based-plastic bottle–which they’re touting as “BPA free”–neither company is willing to switch to BPA-free aluminum cans.
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