text: There are some very good articles concerning your questions. Check out these sites:\n\nhttp://www.healingwell.com/library/depression/aitken2.asp\nhttp://www.psychologytoday.com/articles/PTO-20030723-000001.html\nhttp://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=7932064&dopt=Abstract\n\nand many, many more.