Blount, J. P., and Cox, W. M. Caffeine. Encyclopedia of Human Biology,
Vol. 2, second edition, Academic Press, San Diego, 1997, p. 275. Keijzers, G. B., De Galan, B. E., Tack, C. J. et al. Caffeine can decrease
insulin sensitivity in humans. Diabetes Care, 25:364–69, 2002. Pincomb, G. A. Acute blood pressure elevations with caffeine in men
with borderline hypertension. Am. J. Cardiol., 77:270–74, 1996. van Dam, R. M., and Feskens, E. J. M. Coffee consumption and risk
of type 2 diabetes mellitus. Lancet, 360:1477–78, 2002.