Association of serum caffeine concentrations with serum glucose levels in caffeine-drug users and non-users - results of German National Health Surveys.

The purpose of this study was to explore the association of serum caffeine concentrations with serum glucose levels in caffeine-drug users and non-users, aiming at the chronic effects of caffeine on glucose metabolism in comparison with known acute effects of caffeine. Eight hundred and fourteen caffeine-drug users and 623 non-users were identified from German National Health Surveys. Their serum caffeine concentrations and glucose levels were measured.

Association of serum caffeine concentrations with blood lipids in caffeine-drug users and nonusers - results of German National Health Surveys from 1984 to 1999.

Previous studies regarding effects of caffeine on lipids focused mainly on coffee consumption, the real association of serum caffeine concentrations with blood lipids is unclear. 814 caffeine-drug users who had taken any caffeine/caffeine-containing pharmaceutical products and 623 nonusers without any drug use in the last seven days before the medical interview were identified from German National Health Surveys from 1984 to 1999. Serum caffeine concentrations were measured by using EIA for caffeine-drug users and nonusers in the same laboratory.

Co- and multimedication in users of ASA and vitamin E drugs in the Federal Republic of Germany. Results of the Federal Health Surveys 1984-1999.

Objective: Because ASA- and vitamin E-drugs belong to the most used OTC-medications and adverse drug reactions are depending on the quantity and type of comedication we describe the pattern of usage for ASA- and vitamin E-drugs along with the total drug consumption in Germany. STUDY POPULATION, MATERIAL AND METHODS: Study participants (n = 22.560) were screened in five German health surveys (1984-1999).