This post is not sponsored by Coke, Pepsi, Mountain Dew or _______ (feel free to insert your favorite soda). In fact, they will hate it.
You have undoubtedly read a number of studies as to why it is a good idea to limit the amount of soda consumed. Here is another. A recent study from Japan noted that soda drinkers had an increased risk of kidney disease.
In the study at a Japanese university, 12K employees had various tests performed, including urine test for the presence of protein. The reason is that protein in the urine is considered an early sign that kidney damage is present. The good news is that this is reversible.
The results noted that 11% of those who stated they consumed 2 or more sodas (soft drinks) daily had the highest levels of protein in their urine. Those who consumed no soda or rarely drank it had dramatically less incidences.
It should be noted that besides kidney problems, protein in the urine is an early warning sign of stroke and heart disease.
An earlier study concluded that those who consumed 2 colas per day, be it regular or diet, had 2x the normal risk of kidney disease.
There was no correlation between kidney disease and other carbonated drinks such as Perrier-like substances.