<p>Not at all clear what effect the improved health would have on productivity, or who would benefit. This requires lots of assumptions about the actual productivity of the people under discussion, whether they are in the work force at all, if they do work whether they are doing something useful, or even legal.</p>
<p>The argument for extending health care to all, and improving the health of everyone is a moral one. Not at all clear you save money.</p>
<p>But the overwhelming point is that, no matter how healthy your lifestyle, you will end up as dead as everyone else. So put the responsibility entirely on the individual, and they MIGHT pay more attention to their health, I do not know of any evidence on that subject, but it may be out there. However, do not assume that forcing people to assume this responsibilit will reduce health care costs.</p>