Instruct: Classify a review as either positive or negative.
Query: INDISPENSABLE REFERENCE

This is an indispensable reference to me in my role as holistic healer. The 100 odd substances listed here are a good recipe for health, even if you just take at least 30 of them on a regular basis (many of them are found in fresh fruits and vegetables). They're presented in a very user-friendly way, giving the foods in which you're most likely to find them and listing the conditions for which they may be helpful. There are additional chapters about specific vitamins & minerals for men and women, plus an extensive index. I hope that the author will include anti-aging hormones such as DHEA and Pregnenolone as well as Colloidal Silver in the next edition.