A new study in the Clinical Journal of the American Society of Nephrology suggests that weight loss is an important step kidney disease patients can take to protect their health.

Researchers analyzed 13 previously published, relevant studies that assessed the impact of diet, exercise and surgical procedures on kidney function.

Their findings imply that weight reduction may prevent the progression of kidney disease in obese patients with the illness.

They note, however, that further studies are necessary. "The evidence supporting the role of intentional weight loss in patients with mild to moderate chronic kidney disease to slow the progression of kidney disease is modest at best," the researchers tell Medpagetoday.com.

According to the National Kidney Foundation, more than 20 million Americans – one in nine adults – has chronic kidney disease, and most don’t even know it. More than 20 million others are at increased risk.

Meanwhile, more than a third of U.S. adults are considered either obese or overweight. Weight loss has been proven to improve a number of health problems. For example, it can help control diabetes, lower blood pressure and cholesterol levels and reduce the effects of heart disease.

For those trying to lose or control their weight, health practitioners have also recommended the alkaline diet.

It is based on citrus fruits, vegetables, tubers, nuts and legumes and it helps boost bone health into old age.