Hi Jean-Marc- I don't have access to my files right now so I'm going on memory, but I believe that there was a study published in either Science or Nature that traced the lowering of the age of menarche in Norway to the onset of rural electrification. The authors' contention was that the increased exposure to light was the primary agent. I'll try to provide a source when I'm back on campus tomorrow. I also keep hearing the "cattle & hormones" hypothesis from students but I've never seen a study that confirms it. I suspect that it's another urban legend in the making.
All the best, -Don. Jean-Marc Perreault said: > Greetings, > In discussing adolescence in class, and how today's girls > have their first menstration earlier than half a century ago, a student > asked what the reasons for this may be. One responded that the hormones > injected in cattle might be at play. > > Does anyone have information regarding this? > > Cheers! > > JM > > >> >> > > --- > You are currently subscribed to tips as: [EMAIL PROTECTED] > To unsubscribe send a blank email to > [EMAIL PROTECTED] -- --- You are currently subscribed to tips as: [email protected] To unsubscribe send a blank email to [EMAIL PROTECTED]
