Carbonated water seems like a healthier alternative to sugary sodas. After all, the former contains fewer chemicals and sugar than the latter, right?

Wrong, according to researchers in Palestine.

Data from a study has found that drinking carbonated or sparkling water can cause weight gain.

How fizzy drinks affect hunger hormones

In the Palestinian study, researchers observed rats given sugary water with added bubbles and another group of rats given flat, sugary beverages. The results showed that the first group became fatter and hungrier than the subjects in the second group.

Drs. James Brown and Michael Mosley were curious about the results of the animal study and the two decided to test if the same findings could be replicated among human volunteers.

First, Mosley and Brown recruited healthy volunteers who were told that the study was about gauging the impact of sugary drinks on one’s appetite. The participants were then asked to fast for ten hours before being given calorie-controlled cheese sandwiches.

After one hour, they were each provided with one of four drinks at random: A fizzy sugary drink, a flat sugary drink, fizzy water, or flat water.

Brown then took blood samples from the volunteers 10 minutes later to assess their ghrelin levels. Mosley explained that ghrelin is one of the “hunger hormones” produced in your stomach.

He added that ghrelin goes to your brain to say, “I am hungry, I should eat.”

The volunteers were given food diaries by the end of the first portion of the experiment. This was so that they could write down the foods they’d consumed, allowing Mosley and Brown to measure the amount of calories the volunteers ate hours after their drink. This was repeated three more times over the course of several weeks until all the volunteers had sampled all four beverages.

Once the experiment was over, the researchers informed the volunteers of its true purpose. Brown told the participants about the exciting results of their study, which showed that having a fizzy beverage increased ghrelin levels by at least 50 percent, compared to when you have a non-carbonated beverage.

Essentially, those who had their fill of fizz were much hungrier an hour later than those who had flat beverages. The volunteers who drank fizzy beverages were noted as having consumed an additional 120 calories, an effect of the additional ghrelin produced by their bodies. This applied to both fizzy soft drinks and fizzy water, albeit the effects of fizzy water were less pronounced.

As to why the bubbles in fizzy beverages had this effect, Brown believes that there may be two possible answers. One is that the carbon dioxide that gives drinks their bubbles encourages the stomach to produce more ghrelin. Another potential reason is that the additional gas bloats and stretches the stomach, causing it to release ghrelin.

Following their findings, Brown added that even though flat sugary drinks may seem like the better choice, they aren’t. Brown concluded that the study proves what experts have known all along: That while water is often considered a boring drink, it is a healthy, hydrating beverage compared to carbonated drinks.

Other health effects of carbonated water

Carbonated water doesn’t just cause weight gain. Detailed below are the other ways fizzy drinks affect your health.

• One other way that carbonated water can contribute to weight gain is if it’s the type containing additives. Bottled seltzer usually has sodium and hidden calories such as sweeteners, flavors, and natural and artificial acids.
• Plain carbonated water won’t cause tooth decay, but adding sugar or citric acid will. This is because sugar produces acids that erode and damage the teeth, while citric acid dissolves tooth enamel and greatly increases the risk of tooth decay.
• Carbonated water won’t cause irritable bowel syndrome (IBS) either. It can, however, lead to bloating, which in turn can result in IBS flare-ups.

Visit Sweeteners.news to check out more stories on the potential health effects of carbonated water and other beverages.

Sources include:

DailyMail.co.uk

Healthline.com