Central planners do not typically promote health and welfare. Rather, they tend to promote their own careers and their own bureaucracies at the expense of their citizens subjects. The failures of central planning in the soviet era and during Mao in China stand as classic examples. Modern-day examples would include Venezuela, of course.
Another modern-day example comes from post-Mao China, where pollution gets worse each year and is definitely life-threatening.
Gubmnts do not necessarily do a very good job of dealing with what economists call "negative externalities".
A swathe of China was blanketed with acrid smog Monday after levels of dangerous particulates reached around 50 times World Health Organization maximums, in what environmental campaigners said were the highest figures ever recorded in the country.
Pictures showed smog so thick that buildings in Changchun, the capital of Jilin province in the northeast, were rendered invisible.
One image showed a restaurant's neon sign seemingly floating in mid-air above traffic, proclaiming in yellow: “Eastern Dumpling King”.
Levels of PM2.5, the tiny airborne particles considered most harmful to health, reached 860 micrograms per cubic metre in the city of around eight million.
The World Health Organization’s recommended maximum is a 24-hour average of 25 micrograms.