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Trying to lose weight? Sparkling water could be your secret weapon

A new report shows that fizzy water may have metabolic benefits, which could have implications for weight loss – but you’ll still need to exercise and watch your diet

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Sparkling water may have some metabolic benefits, but don’t skip the exercise and healthy eating. Photo: Shutterstock

Published: 11:30am, 20 Feb 2025

Could your favourite fizzy drink be a secret weapon for weight loss? New research offers insights into sparkling water’s potential benefits.

A report published in BMJ Nutrition, Prevention & Health compared how carbon dioxide affects blood glucose by examining carbonated water consumption and haemodialysis treatments (a type of dialysis). The results showed that when CO2 entered the bloodstream, glucose levels dropped from 118.3 to 98.6 mg/dL, suggesting potential metabolic benefits.

However, the study notes: “The amount is so small that it is difficult to expect weight loss effects solely from the CO2 in carbonated water.”

Sparkling water can help support weight loss goals. Photo: Getty Images

But before you feel deflated, there are other ways sparkling water could support your weight loss goals, according to the Cleveland Clinic. The bubbles can help you feel fuller, potentially reducing unnecessary snacking between meals. Plus, it can be used to help kick a sugary soda addiction.

“It can be difficult to transition from sweet drinks to water, but flavoured seltzers and sparkling water can help,” registered dietitian Lauren Sullivan told the Clinic. “Water, whether plain or carbonated, is better than high-calorie, sugar-infused drinks.” Just keep in mind, not all sparkling waters are created equal. Skip varieties with added sugars, artificial sweeteners or high sodium levels.

Sparkling water is still healthier than sodas and juices, which are full of sugar. Photo: Getty Images

To achieve even greater weight loss, Dr Josh Kaplan, founder and CEO of Dr Well by BuildMyHealth, recommends incorporating sparkling water into a broader plan that includes consistent physical activity, a balanced diet, adequate sleep, effective stress management and proper hydration, Healthline reported.

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