GHRL and heart failure: Specific terms like “SGLT-2 inhibitors”, “SGLT2i“, “flozins”, “adipocyte”, “adipokines”, “adiponectin”, “leptin”, “ghrelin”, “resistin”, “apelin”, “adipose tissue”, “weight loss”, ”diabetes mellitus type 2”, “heart failure” were selected to be the key words to sift out studies, which might be potentially relevant.