In the Type 2 diabetic rat model induced by HFD and low-dose of STZ, biotin supplementation exerted antioxidant, anti-hyperlipidaemic, anti-inflammatory and anti-hyperglycaemic effects, increasing the level of insulin, probably through modulation of PPAR-γ, IRS-1 and NF-κB proteins [99]. This evidence concerns the gene PPARG and type 2 diabetes mellitus.