SHBG and type 2 diabetes mellitus: A decreased risk of type 2 diabetes was observed with 15 exposures: plasma alanine, HDL- and total cholesterol, age at menarche, testosterone levels, sex hormone binding globulin (SHBG) levels (adjusted for BMI), birthweight, adulthood height, lean body mass (for women), four plasma fatty acids, circulating 25-hydroxyvitamin D and education years.