Unpopular hypothesis: Executive function is causally correlated with health and wealth.
Ironically something negatively affected by lead exposure, yet the comment you reply to seems to be judging people in poor area's decisions as being a factor in theit health outcomes while at the same time minimising lead poisoning's impact.
But we have to get to the root cause of inequality to begin talking about a solution.
Most people have poor health because they make poor decisions. So either we disallow them agency and act as their perpetual nanny, or accept the world isn't perfect and that distributions will be unequal.
Throwing money at the problem won't help. You can spend unlimited healthcare dollars for no measurable benefit.