Sugar-sweetened beverages linked to increased dementia risk

Regular consumption of sugar-sweetened beverages, such as soda, sweetened tea, and energy drinks, may increase the risk of dementia by exacerbating underlying health conditions. While these drinks may not cause dementia directly, experts note that excessive long-term consumption can worsen known risk factors, including high blood pressure, diabetes, and heart disease.

Nutritionists explain that because these beverages consist of liquid sugar without protein, fiber, or fat to slow absorption, they cause rapid spikes in blood glucose. Frequent spikes can lead to insulin resistance, a condition where cells do not respond effectively to insulin. Since the brain relies on insulin signaling for energy and memory, disruptions in this process can impair cognitive function. Additionally, these beverages may damage blood vessels, which are essential for delivering oxygen and nutrients to the brain.

A 2023 study indicated that consuming more than two sugar-sweetened drinks per day is associated with a higher risk of dementia compared to non-consumers.