The information contained throughout this site is based on the most recent edition of the book The Hardness Factor, and all efforts have been made to ensure the accuracy of the information contained in such edition as of the date it was published. This information is provided for your personal knowledge. The information should by no means be considered a substitute for the advice of a qualified medical professional, who should always be consulted before beginning any new diet, exercise, or health program. The author and publisher expressly disclaim responsibility for any adverse effects arising from the use or application of the information contained herein.