Jul 09, 2012 12:12 AM GMT
This could partly explain the link researchers have found between drinking diet soda and being overweight. In one study, people who drank two or more diet sodas a day had five times the increase in waist circumference over a 10-year period compared to people who didn't drink any diet soda. There are a few explanations for the findings. Maybe people drink more diet soda because they're trying to lose weight. Calorie-free sweetness may also confuse the brain into craving more sugar.
As for your gut, at this point it's not clear if one diet soda a day is less damaging to the gut flora than ten. "I will say from a personal perspective that I don't drink sodas--diet or regular--and I rarely eat processed foods, especially if they have high-fructose corn syrup listed on their label," Payne says. Your best bet is to consume products containing these sweeteners in moderation, and drink mostly water. For gut flora to thrive, eat a wide variety of fruits, vegetables, and whole grains.