GLP1R and obesity due to melanocortin 4 receptor deficiency: From this literature review, it is abundantly clear that there is a significant association between the occurrence of asthma and type 2 diabetes mellitus, the likely pathomechanisms for which include pulmonary microangiopathy, low-grade inflammation, obesity, and insulin resistance. Unfortunately, this means that each of these disorders imposes extra health burdens on top of those known already. The review also revealed that the use of antidiabetic drugs, notably metformin, and GLP1 receptor agonists is linked to a decreased occurrence of asthma exacerbations among diabetics.