Does anyone know if family illnesses or things like alcoholism in the male lines could cause such great mutations among a single family surname group? As I have lamented before in the past, our surname group which is stated to be of a Norse descent very anciently, has more than its share of normal mutations amongst a Ydna surname group. Example...in our surname group we now have approx. 108 participants.Among those our surname is showing about a dozen or so different Ydna HaploTypes. Most of them within their groups seem to be near exact matches or maybe one or two mutations off from each other. However that is not the case within our particularly small group of I1d-N (Norse)/L-22 group.While we are all of the same surname our mismatching mutations are vast and up to as much as 5 to 6 off from each other while some are very near exact matches. So this is why I am wondering if perhaps things like alcoholism or diabetes etc. could cause mutations? Just wondering, thanks for any insight into this subject.