A recent study found that people who drink 2 cans of cola daily are twice as likely to develop chronic kidney disease (it made no difference whether the colas were artificially sweetened). Other sodas that were not colas, and juices, did not have the same effect. The cause of this is not known, but speculation includes the idea that the kidney damage may be caused by the phosphates in the colas.
We already knew that the extreme amount of sugar in sweetened colas promotes weight gain and diabetes. This new evidence highlights even more medical risk caused by drinking cola regularly!
Here is a link to the abstract of the article published in the journal "Epidemiology":
(potassium deficiency), leading to muscle wastage and paralysis.
Carbonated beverage consumption has been linked with diabetes, hypertension, and kidney stones, all risk factors for chronic kidney disease. Cola beverages, in particular, contain phosphoric acid and have been associated with urinary changes that promote kidney stones. METHODS: We examined the relationship between carbonated beverages (including cola) and chronic kidney disease, using data from 465 patients with newly diagnosed chronic kidney disease and 467 community controls recruited in North Carolina between 1980 and 1982. RESULTS: Drinking 2 or more colas per day was associated with increased risk of chronic kidney disease (adjusted odds ratio = 2.3; 95% confidence interval = 1.4-3.7). Results were the same for regular colas (2.1; 1.3-3.4) and artificially sweetened colas (2.1; 0.7-2.5). Noncola carbonated beverages were not associated with chronic kidney disease (0.94; 0.4-2.2). CONCLUSIONS: These preliminary results suggest that cola consumption may increase the risk of chronic kidney disease.