This book really makes you think about what you are putting in your body and how it is processed. It's at this level of contemplation where change can really be planted as seeds that grow out of increased awareness. He's conversational and enthusiastic in his style--an easy-going writer, which helps because it's quite scientific at times.
And then, in the end, he really ties everything up in a bow with info on music, prayer and other spiritual and emotional practices that are seriously important to overall health. That last section alone won him a lot of bonus points with me, because that is what I witness in elderly people who have aged with grace--a sense of spirituality and an emotional resolve to be positive.