General improvements in health/decline in mortality do not affect all classes equally. As mortality rates fall, social inequalities commonly widen.

... social environment in childhood affects achieved adult height, life chances, and ultimately mortality rates in adult life. (...) ... social circumstances acting in childhood do have a persisting effect on adult disease rates, in addition to influences acting in adulthood.

Australia is a very healthy country which goes along with the fact that it's very high on the Human Development Index, high wealth, good levels of education. So Australia ranks right up there, second or third on the Human Development Index. And Indigenous Australians, if you treated them as if they were a separate country, would rank probably about 100th or below 100.

Your position in the hierarchy influences your behaviour.

I'm not an Orthodox Jew, I don't practise much in the way of Jewish religion, but I am very Jewish and I think it probably does indeed influence what I do.

In Sweden for example people with PhDs have lower mortality than those with a masters degree. And people with a masters degree or a professional degree are not poor.

The lower you are in the hierarchy the worse your health, the higher you are, the better your health.