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To the Editor: Coffee consumption has been associated with a substantially lower risk of developing type 2 diabetes.¹ However, despite the widespread use of coffee, there are few data on the specific effects of coffee on the 2 main causes of diabetes, ie, insulin resistance and defective insulin secretion. We investigated the association between coffee consumption and both insulin sensitivity and insulin secretion in a sample of elderly Swedish men without diabetes.

Methods

We reanalyzed cross-sectional data collected between 1990 and 1994 from the Uppsala Longitudinal Study of Adult Men (ULSAM). A dietitian instructed all participants to record their dietary intake using a 7-day precoded food diary. Coffee and tea consumption were recorded 6 times daily (breakfast, lunch, supper, between meals, and in the evening). Amounts of sugar, cream, and milk used in coffee, as well as of cookies, cakes, and biscuits consumed with coffee, were also recorded at these occasions. . . . [Full Text of this Article]

Johan Ärnlöv, MD, PhD
johan.arnlov@pubcare.uu.se
Section of Geriatrics

Bengt Vessby, MD, PhD; Ulf Risérus, MMed, PhD
Section of Clinical Nutrition Research
Department of Public Health and Caring Sciences
Uppsala University
Uppsala, Sweden

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