Being forced to change occupations, employers or location destroys some of that human capital and thus lifetime earnings potential.
The lifetime earnings of a tightwire walker who falls down and kills himself aren't very good.
Academic research suggests that for many of these graduates, that correlates to overall lower levels of career attainment and lower lifetime earnings.
Vitamin A supplements cost just a dollar or two. Their benefits—preservation from fatal diseases, higher lifetime earnings—so massively outweigh the tiny costs that poor people ought to snap them up.
Relatively low levels of exposure can reduce their IQ scores, cause learning disabilities, poor school performance, and violent behaviour, all of which may contribute to reduced lifetime earnings.
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