– Narrator: In the early 1960s a new kind of beverage took the stage. It wasn’t a new shape
or a color or flavor. No, this was diet soda and it was awesome. With fewer calories and less sugar diet soda promised to be a healthier alternative to regular soda. But, like most promises in life that sound too good to
be true, it probably is. Can you tell the difference between a glass of regular and diet soda? Turns out, neither can your body and that’s where the trouble starts. Until recently, everything we ate contained some amount of calories. When we ate something sweet, for example, the brain sent signals to our pancreas, which started producing insulin that stored the sugar molecules
in our cells for energy. So, when we drink diet soda, the sweetness tricks our body
into thinking it’s real sugar but when those energy
packed calories don’t arrive the insulin has nothing to store. Scientists think that repeatedly
tricking our body this way could explain why study after study keeps finding the same thing. That drinking diet soda is associated with metabolic syndrome. Metabolic syndrome is a mix of conditions that includes increased blood pressure, high blood sugar and weight gain which can increase the risk of diabetes, heart disease and stroke. In fact, one study found
that diet soda drinkers had a higher risk of stroke and dementia than regular soda drinkers. And for another eight-year-long
study, between 1979 and 1988 participants who started
out at a normal weight and drank an average of
21 diet beverages a week faced double the risk of
becoming overweight or obese by the end of the study compared to people who avoided
diet beverages completely. And while drinking diet soda
with the meal may sound like a tasty calorie free
alternative to plain water, the growing body of
research is starting to find that this may be the
worse time to drink it because the fake calories in the diet soda could ultimately disrupt how many of the real calories we metabolize, potentially leaving excess calories behind that we then store as fat. Another issue could be the fact that artificial sweeteners in diet sodas can be 10s to 100s of
times sweeter than sugar. So when we taste it, our brains anticipate more calories than what we give it. It’s like when you go to a
party expecting loads of food and you end up with a handful
of veggies and vegan cheese. You’re left unsatisfied and hangry. In the same way, artificial sweeteners can leave our brains wanting more which studies have shown
leads to increased appetite and potential weight gain in
fruit flies, mice, and humans. So if the reason you’re drinking diet soda is to drop a few pounds,
maybe just stick to water. Got any friends obsessed with diet soda? Share this video with them
and thanks for watching.