GCG and diabetes mellitus: Several distinct combinations of the terms “nondiabetes,” “diabetes,” “type 2 diabetes,” “Ramadan,” “fasting,” “obesity,” “overweight,” “GLP,” “GLP-1,” “GLP-1RA,” “GLP agonist,” “GLP-1RA analog,” “Incretin mimetics,” and “antidiabetic drug” were used in several different combinations in several databases, including PubMed, Google Scholar, CiNAHL, and others.