“In recent years, the number of states that have legalized medical marijuana or retail sales has increased, bringing potential changes of marijuana use pattern among the general population. However, health effects of acute and chronic marijuana use on many relevant health outcomes, including renal function, remain largely unexamined.
In this study, we aimed to assess the association between recent and past marijuana use and renal function.
CONCLUSIONS:
We did not observe any clinically significant association between current or past self-reported marijuana use and measures of kidney function.”
https://www.ncbi.nlm.nih.gov/pubmed/29291894
http://www.amjmed.com/article/S0002-9343(17)31193-2/fulltext
“No link between current or previous marijuana use and kidney disease, say researchers” https://www.sciencedaily.com/releases/2018/03/180301125051.htm
“Marijuana Doesn’t Seem to Harm the Kidneys” https://www.webmd.com/mental-health/addiction/news/20180306/marijuana-doesnt-seem-to-harm-the-kidneys
“”Our research provides some reassuring evidence suggesting that there is no detrimental effect of infrequent, relatively light use of marijuana on kidney function among healthy adults under age 60,”” https://consumer.healthday.com/general-health-information-16/illicit-drugs-news-217/marijuana-doesn-t-seem-to-harm-the-kidneys-731632.html