Also Included In: Urology / Nephrology; Nutrition / Diet
Article Date: 02 Jun 2012 - 0:00 PDT
'Are The Kidneys Damaged By Low-Carb Diets?'
Low-carbohydrate, high-protein diets - like the Atkins diet - have been popular among dieters for years. For just as long, experts have worried that such diets might be harmful to the kidneys. A study appearing in an upcoming issue of the Clinical Journal of the American Society of Nephrology (CJASN) looks into these safety concerns.
Allon Friedman, MD, (Indiana University School of Medicine) and his colleagues compared the effects of a low-carbohydrate, high-protein diet versus a standard low-fat diet on a variety of kidney-related measures in 307 obese individuals without kidney disease over a two year period.
The researchers found that a low-carbohydrate high-protein weight loss diet did not cause noticeably harmful effects to patients' kidney function or their fluid and electrolyte balance compared with a low-fat diet. "These results are relevant to the millions of healthy obese adults who use dieting as a weight loss strategy," said Dr. Friedman.
The authors noted that further follow-up is needed to determine even longer-term effects of the diet on the kidneys. Additional studies should also evaluate the effects of the diet in different types of individuals, such as those with chronic kidney disease, diabetes, or hypertension, and those at increased risk of developing kidney stones.
Article adapted by Medical News Today from original press release. Click 'references' tab above for source.Visit our obesity / weight loss / fitness section for the latest news on this subject. Study co-authors include Lorraine Ogden, PhD, Gary Foster, PhD, Samuel Klein, MD, Richard Stein, PhD, Bernard Miller, MD, James Hill, PhD, Carrie Brill, Brooke Bailer, PhD, Diane Rosenbaum, and Holly Wyatt, MD.
An editorial will accompany the July 2012 print publication of this study.
Disclosures: The authors reported no financial disclosures.
The article, entitled "Comparative Effects of Low-Carbohydrate High-Protein Versus Low-Fat Diets on Kidney Function," is online at http://cjasn.asnjournals.org/ , doi: 10.2215/CJN.11741111.
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posted by dr André Kruger on 2 Jun 2012 at 3:09 am
Good to note that healthy kidneys can temporarily cope with the nitrogen overload. But what is the effect of a high protein diet on many other aspects of health? An abundance of amino ACIDS and the stimulation of collagenases (As all meat contains collagen) might risk other organs, including bone: After all, bone is a collagen matrix hardened by ALKALINE minerals.
Do also note that the incidence of malignancy in the population as a whole increased parallel to the increase in animal proteins in our diet. And the study of doctors' health over 30 years have found a reduction of 7 years in life expectancy associated with an extra portion of meat every day...
We need to look beyond just the kidneys.
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