
Dr. Sylver has compiled a fascinating array of sources. The bibliography cites contemporary medical journal articles along with accounts that are centuries old but still relevant. There are many pages of easy-to-use tables. One section pinpoints what sauna style, heat source, and construction materials are best suited to particular needs. Another section identifies which symptoms and conditions respond well to sauna therapy, which require medical supervision, and which contraindicate the use of heat treatments altogether. (With proper supervision most people, regardless of their health issues, can benefit.) There is even an appendix on ozone.