> basically amounts to "be healthy and happy" That is an entailment, not a lossless summary. There is no strong deduction from that list to the consequence in

> basically amounts to "be healthy and happy" That is an entailment, not a lossless summary. There is no strong deduction from that list to the consequence in topic, and the study is a quantitative confirmation. Again for the logical fault, there is no deduction e.g. from "happiness" to "prevention of dementia", and likewise "be healthy" is too broad. Moreover, on the intention, a number people may not be focused on either health or happiness, while they may be interested in preserving abilities.