Does a reduction in alcohol use by Dutch high school students relate to higher use of tobacco and cannabis?
Between 2005 and 2009 alcohol consumption strongly decreased among high school students. This may be due to the national prevention campaign which in the same period highlighted the importance of not drinking before the age of 16. The decrease in smoking and cannabis use between 2005 and 2009 may be due to clustering with alcohol consumption. A reduction in the use of alcohol in adolescence did not lead to replacement by tobacco or cannabis use.
Cardiac chronotropic responsiveness is reduced following an Ironman triathlon.