Random assignment to GLP-1 RA treatment resulted in a reduced risk of Pulmonary edema (RR 0.66, 95% CI 0.44–0.98, p = 0.04; I2 = 11; Additional file 1: Fig S3), Bronchitis (RR 0.86, 95% CI 0.74–1.00, p = 0.04; I2 = 0; Additional file 1: Fig S4). Here, GCG is linked to pulmonary edema.