Siopis G, et al. - This study was intended to match the efficacy of nutrition therapy delivered by dietitians to nutrition advice delivered by other healthcare professionals in adults with type 2 diabetes on metabolic parameters. Researchers carried out to search Cochrane CENTRAL, CINAHL, EMBASE, MEDLINE and PsychINFO for randomized controlled trials of three months duration or longer, published from 1st January 2008 to 18th June 2019. The mean changes in HbA1c and other clinical parameters were assessed by random-effects meta-analysis. In qualitative synthesis and meta-analysis, of 2,477 records identified, fourteen studies, involving 3,338 participants, were eligible. This study’s findings demonstrate that the nutrition therapy provided by dietitians was correlated with better clinical parameters of type 2 diabetes, including clinically significant improved glycaemic control, across diverse multiethnic patient groups from all six inhabited continents. In clinical guidelines, this conclusion should be reflected.