INS and type 2 diabetes mellitus: A recent study in middle-aged and older men from eastern Finland (n = 2332; aged 42–60 years) free of T2D at baseline reported that after an average follow-up of 19.3 years the lowest vs. the highest quartile of adherence to NND was associated with a higher risk of incident T2D and with a higher blood glucose and insulin concentrations after adjustment for confounders [152].