So, Dr. K states that long term use of AIs does damage, at least with regards to bone density, in all men except for the odd outlier, regardless of dosage. This is, of course, diametrically opposed to Dr. Crisler's position, who has frequently stated that there are no studies showing harm when the dosage is an "appropriate" amount. Is Crisler saying there are no studies showing harm when the dosage is an "appropriate" amount, or that there are no studies at all to begin with? Big difference. Anyway, a good presentation by Dr. K.