Author/dentist Henry Lorin watched helplessly as his wife's father developed Alzheimer's disease, while his own father did not. The two men were the same age and very similar medically, except for one key health factor. Dr. Lorin then spent years studying all the medical research, utilizing the clues and insights gained from his family's experience. The result? He is able to show that this one factor is the true key to Alzheimer's. Dr. Lorin's book reveals that factor and the simple steps needed to prevent the disease.