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Independent research links soda to obesity and diabetes.

Of 60 studies on sugary drinks and disease, every study funded by the beverage industry found no link.

Diabetes, obesity, and depression are closely linked, and soda can worsen all three.

In my last post, Diet Soda and the Brain, I described how artificial sweeteners like sucralose may affect hunger, memory, and gut-brain signaling. That raised an obvious question: If diet soda isn't the safe choice we thought, what about regular soda?

The evidence against sugar-sweetened beverages is even more consistent, and has been for years. The more interesting story is why so many of us remain unsure of that. Some of that uncertainty didn't happen by accident. It was manufactured.

What the Independent Science Shows

Sugar-sweetened beverages are the largest source of added sugar in the American diet. A systematic review conducted for the 2025–2030 Dietary Guidelines for Americans concluded that these drinks may raise the risk of type 2 diabetes in adults, based on studies published between 2000 and 2024. A separate 2025 review found the pattern wasn't subtle: The more sugar-sweetened beverages people drank, the higher their diabetes risk climbed.

This makes biological sense. Sugary drinks deliver a large, fast dose of fructose and glucose with none of the fiber or protein........

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