Nothing medically/professionally recognized as far as I know, but that doesn’t change the fact that he’s helped countless people. As I said before, some stutters are caused by anxiety, some by TBI’s, and I did forget to mention but some are genetically caused. TBI’s and genetic related stutters probably wouldn’t benefit from Lovetts methods. Also, anxiety related stutters don’t seem to have the attention of medical professionals because they are just that: nerves. Just my two cents.