A study claims fizzy water aids weight loss — here's what the experts say
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Still or sparkling water for the table? It’s a polarising question. Some simply hate the carbonated cousin of the flat stuff. But what it does to our digestion is also a source of contention. Now though, the tide might be turning in favour of water with fizz, thanks to the results of a new study about its effects on blood glucose levels. And in times when many are monitoring their blood sugar spikes with devices such as the Zoe, it’s been enough to pique serious interest.
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The findings of the research by Tesseikai Neurosurgery Hospital in Japan argue that carbonated water could lower blood glucose, which could in turn be beneficial for the metabolism and therefore aid weight loss. It points to the fact that carbon dioxide in the water could speed up the absorption of glucose when it is taken up by red blood cells. And as this has the effect of minimising spikes and dips in blood sugar levels, the body’s cells might more effectively burn fat between meals for energy.
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However, other experts have thrown the findings into question, with further research published in the journal BMJ Nutrition Prevention & Health by Dr Akira Takahashi noting that: “While many advocate for its benefits, it is important to explore the underlying mechanisms more closely.”.
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The original paper suggests that haemodialysis (a common type of dialysis) turns blood alkaline, primarily by producing carbon dioxide. Similarly, the Japanese researchers said, the carbon dioxide in fizzy water is absorbed by the stomach and into the bloodstream. This alkalinisation process speeds up glucose absorption, they claim.
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