Health Lab's theme is the most popular of Dr Joe's specialities. There are riveting and sometimes hair-raising vignettes from the history of medicine and food production. There are reports aimed at equipping readers to recognize and beware muddled thinking, misunderstandings and deceptions in media stories about health and nutrition and in the claims made by the peddlars of "alternative" therapies. There is a wealth of information on the science of inner well-being and outer beauty. The secret to good health lies in understanding the chemistry involved. Ask Dr. Joe.