minor drinking

In these days, the instruction about minor drinking becomes more strict among many universities. So, why? there are two hypothesis. One thing is that junior school students or high school students' drinking becomes more natural. For example, in Okinawa prifecture, 16.5 juveniles are drinking per 1000 peoples. That is the ten times of the average of the whole country.That solution ,I think, is adlut's corpolation among region. The other thing is that becouse of declining birth rate, the value of university students is going down, in addition to that, they are not belonging to the elite class.That is becouse it is more easy to enter the universities if the number of candidate become declining. But, futher lately, a new problem happens that on the mixi, which is a kind of site and becoming bigger and bigger,juveniles confess their drinking for public. This prolem indicates that their confessions for public themselves are more absurd than their drinking itself. But, suprisingly,we don't know very well about why minor drinking is harm to juveniles. If we can study much more about it during junior high school or high school, can this spread of minor drinking be prevented? I think the nearest way is that we go over not the regulation along low but education itself.