Note Body comes before Mind, even though the Mind is the more precious commodity.
Okay, I give up. This is a quaint riddle of some kind, right? I always thought a good, productive, contributing person of compromised health was more valuable than an antisocial, destructive, parasitic person in perfect health. So, body comes before mind ... because ... ?
Because a valuable Mind is only useful as long as the Body stays alive. This is something of a ChickenAndEggProblem in a sense, but we can take the easy way out by presupposing that the Mind starts out as pretty decent. Enabling the Mind activity requires a functional Body, and neglecting the Body overmuch can lead to the inability to use the Mind - either by disease or death. As my father was very fond of reminding me, one's skills are only useful if they are being used.
Perhaps we need something simple so lay people can know both the risks (two sudden deaths of young people got my attention in the past week), and means to controlling its level (e.g. if I put myself on zero cholesterol diet how quickly will my cholesterol level drop?).