Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Easy read - Mostly sound advice

I skimmed the book in 2 or 3 hours, skipping most of the case studies. Went back and reviewed what I felt were important to me and acted on the Doctors advice. I observed some effects from taking the substances per recommended dosages. My muscle tone improved. I'm am male age 62. My skin complexion reverted back to young adult levels, skin blemishes I have not experienced for 35 years. I am satisfied the book answered the questions I was looking to answer. If you have questions about these matters this book is worth the time and expense.