[Which prevention programs effectively reduce the risk of alcohol consumption in young people?].

Alcohol consumption among young people is a major public health problem and the Italian National Health Institute considers it the leading cause of death for people under 24 years old, mainly due to road accidents. This study summarizes the evidence emerging from three Cochrane Collaboration reviews, aiming to orient the choice of alcohol prevention programs for young people. The first review considered schemes implemented at school to prevent alcohol consumption under 18 years of age; the second concerned studies on programs to reduce alcohol abuse by means of social norms; the third examined 56 trials on schemes for preventing young people from drinking. In the first review, 6 of 11 alcohol prevention schemes showed some signs of efficacy, and 14 of 39 schemes to combat substance abuse generally induced a significantly alcohol use reduction. The second review included three specific programs for alcohol-related problems with a > 17-month follow-up and they were effective. In the third review, 15 of 39 schemes proved effective in the short-term, 9 of 12 with medium follow-up were no longer effective (and alcohol consumption even increased in 2), while 3 long-term trials and 2 of 3 community schemes proved effective. These Cochrane reviews did not assess all strategies for preventing alcohol abuse in the young which have been implemented in different countries, because many interventions has been conducted spontaneously without any evaluation of their efficacy. An international registry on substance abuse prevention measures is warranted, with shared criteria for assessing their effects, to orient public health policies.