Death by Diet is an informative guide to health and longevity written by Bob Barefoot.  Barefoot explores the connection of the food we eat and its impacts on our overall health and life expectancy. Death by Diet details how healthy individuals register body fluids such as blood and saliva in normal alkaline (pH) levels and unhealthy individuals body fluids register in the low pH ranges on an acidic test scale.  Barefoot relates the positive impact of simple dietary changes combined with vitamin and mineral supplementation in this easy to follow book to health.