Is there any information on the effects of Green Coffee Bean Extract on kidneys. I have Stage III kidney disease, need to lose 20-30 lbs and have been told I am pre-diabetic. I have always found that more protein in my diet helps me lose weight (stay less hungry) but now think I need to cut the protein. I really need something to help with the weight loss. I am 67, get a moderate amount of exercise but lately have felt too tired to push myself. I have an undeclared autoimmune disorder and have had to give up anti-inflammatories, which doesn't help when it comes to exercise. I have researched as best I can and cannot find anything related to these and kidney function. I found an article on PubMed which indicates it may lower BP and also stabilize blood surgar (good things). Any thoughts?

Post date: February 13, 2013
Green Coffee Bean extract has become popular lately. An article in the Journal of the Academy of Nutrition and Dietetics this month notes some animal and human research that it may help with weight control and blood glucose control. However, a published meta-analysis (Gastroeneterology Research and Practice) reports that the studies done so far are of a poor methodological quality. The main job of the kidneys is to eliminate waste: if they are not functioning at their full capacity, the risk of toxicity from an herbal supplement is greater. Even if an herbal supplement is safe for most people, this might not be the case in kidney disease. Unless there is high quality published research of Green Coffee Bean extract in persons with chronic kidney disease, it would not be recommended. Please check with your physician before taking any herbal supplement or vitamin / mineral supplement. Interactions with medications is a potential concern as well.
Here is some information about herbal supplements and kidney disease on the NKF web site: