GPT and type 2 diabetes mellitus: In detail, an increased risk of type 2 diabetes was observed with 19 exposures: depression, insomnia, systolic BP, smoking initiation, lifetime smoking, coffee (caffeine) consumption, plasma isoleucine, valine and leucine, liver alanine aminotransferase, childhood and adulthood BMI, body fat percentage, visceral fat mass, resting heart rate, and four plasma fatty acids.