Berberine weight loss claims went viral as ‘Nature’s Ozempic.’ Meta-analyses show it produces ~2 kg loss — about 7× less than semaglutide. Here’s what the evidence actually supports.
Ozempic long-term effectiveness fades fast after stopping. An Oxford review of 37 studies found weight returns at 0.4 kg/month — full regain by 20 months.
What to eat on GLP-1 medications matters — up to 40% of weight lost can be muscle. Updated with March 2026 research and a sample meal plan.