Did vitamin D, Omega-3 supplements help prevent development, progression of CKD in adults with type 2 diabetes?

(JAMA Network) Researchers in this randomized clinical trial investigated if supplementation with vitamin D or omega-3 fatty acids compared with placebo over five years helped prevent the development or progression of chronic kidney disease among adults with type 2 diabetes. The main outcome measure was change in the glomerular filtration rate that was estimated from serum creatinine and cystatin C.