Research

Hormonal

In patients with type 2 diabetes, the addition of orlistat to a behavioral weight loss intervention yields significantly greater improvements in insulin sensitivity and reductions in plasma free fatty acids (FFA) compared to behavioral intervention alone, despite achieving equivalent total weight loss.

If you have type 2 diabetes and are overweight, adding orlistat (120mg with meals) to a standard weight loss program (diet and exercise) can improve your body's sensitivity to insulin better than diet and exercise alone. This happens because orlistat helps lower free fatty acids in your blood, which directly reduces insulin resistance, even if you lose the same amount of weight as someone not taking the drug.

GoodSupportsHIGH confidence
At equivalent weight loss, conjunctive use of orlistat resulted in greater improvement in FFA levels and IS.
David E. Kelley et al. · Diabetes Care · 2004

Why this rating

Randomized, double-blinded, placebo-controlled clinical trial with rigorous metabolic measurements (euglycemic clamp).

Source

Effects of Moderate Weight Loss and Orlistat on Insulin Resistance, Regional Adiposity, and Fatty Acids in Type 2 Diabetes

David E. Kelley et al. · Diabetes Care · 2004

DOI 10.2337/diacare.27.1.33

rct · n=39Cited 168×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →