Not Convinced That Your Liver Absolutely, Positively Is Clogged, Congested, And Needs Cleansing, Potentially Curing A Host Of Illness Including Allergies, Diabetes, And Irritable Bowl Syndrome? Then Read:

The Liver-Cleansing Diet by Sandra Cabot M.D.:
http://www.amazon.com/exec/obidos/ASIN/0646277898

The Amazing Liver Cleanse: A Powerful Approach to Improve Your Health and Vitality
by Andreas Moritz:
http://www.amazon.com/exec/obidos/ASIN/1403329974

The Healthy Liver & Bowel Book by Sandra Cabot M.D.:
http://www.amazon.com/exec/obidos/ASIN/0967398304