The book not for you. It's for 3-6 year olds.
If you are looking for a book for older adults with chronic and deteriorating health conditions, and how to manage that, then this isn't a book you'd choose.
I say again, this is a book for children to help them love themselves and look after their bodies.
(rather than the 40-odd other books for children which tell them that their healthy body is wrong because it doesn't match their personality, so they should make it unhealthy, giving themselves lifelong serious complications, while pursuing the impossible. I'm interested, zebra, did you spend this long complaining about any of those books? Or is it just this one which has you vexed?)