It is a primer for the subject matter, but a very good one. If you are starting off reading about modern longevity studies I'd have a tough time recommending anything else more.

Will it motivate you to put the info into action? That's on you. But if you are not the type to be easily motivated to make some simple changes to temporarily evade merging with the infinite...then probably not. Maybe instead think of it like this: it might give you a better probability of reading an obit for someone you weren't fond of.