Consuming cola—one of the most popular drinks—can create a burden on the kidneys due to the presence of phosphoric acid, high fructose corn syrup, and caffeine. This is stated in an article by Verywell Health.
1. Phosphoric Acid Burdens the Kidneys
Phosphoric acid gives cola its flavor and acts as a preservative, but with frequent consumption, it raises phosphorus levels in the body. This disrupts the balance with calcium: the body starts to draw it from the bones, while the kidneys actively excrete the excess phosphorus.
Over time, such a burden can lead to chronic kidney disease, an increased risk of hypertension, diabetes, and the formation of stones.
2. Sugar Increases the Risk of Diseases
One serving of cola contains 30–40 g of sugar. Regular consumption contributes to weight gain, insulin resistance, and the development of type 2 diabetes.
High sugar levels damage the kidney filters and can lead to diabetic nephropathy. The risk of stone formation also increases.
3. Caffeine Contributes to Dehydration
Caffeine has a diuretic effect. Excessive consumption of cola can lead to chronic mild dehydration, which increases the risk of kidney stones.
Additionally, excess caffeine can contribute to elevated blood pressure—another risk factor for the kidneys.
How Much Can You Drink
For healthy individuals, several servings per week are generally safe. However, daily consumption of sugary drinks increases the risk of chronic kidney disease by about 19%.
Even diet cola can raise risks, although to a lesser extent.
Alternatives
Experts recommend choosing water, unsweetened tea, or fruit drinks more often. They help maintain hydration without putting extra strain on the body.
Several servings per week are unlikely to harm a healthy person, but frequent consumption increases risks—from kidney stones to chronic diseases. We advise against excessive cola consumption and encourage choosing safer alternatives, such as water or unsweetened drinks.
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