In my experience reviewing the clinical literature, the GIP receptor activation in tirzepatide seems to improve how the body handles fat storage and insulin sensitivity in a way that GLP-1 alone does not fully replicate
Insurance plans are more likely to cover GLP-1s for type 2 diabetes than for weight loss alone
Side effects are usually gastrointestinal (nausea, diarrhea) but serious adverse events are relatively uncommon
Important: these products are not interchangeable dosefordose
Research the two cited from Cornell and Numerator showed GLP-1 users are buying more yogurt, meat snacks, candy, fruit and deli items and fewer salty snacks, sweet bakery items, eggs, vegetables and cheese
doi: 10.1016/j.cell.2016.02.011, Summary Keywords coronary heart disease, gut microbiota, immune environment, metabolites, phenylacetylglutamine Citation Ren B, Wang H, Cao Y, Zhang Z, Wu X, Ji S and Zhao J (2026) Integrated analysis reveals microbiotametaboliteimmune alterations associated with coronary heart disease