Your position in the hierarchy influences your behaviour.

Low income is related to poorer housing, poorer diet, fewer social amenities, worse working conditions. (...) After adjustment for age, sex, race, smoking, alcohol consumption, sleep habits, leisure-time physical activity, chest pain, diabetes, or cancer, there was still an increase risk of 1.6 for those with inadequate incomes.

The differences between Indigenous and not Indigenous Australians can be easily attributed not to differences in their genes but to differences in the conditions in which they're born, grow, live, work and age - in other words, to the social determinants of health.

I was born in North London, migrated to Australia when I was four. So when I first came to Australia people saw me as a little English boy. Over the years that feeling of being a little English boy diminished and I felt much more Australian.

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

Angus Deaton has written a wonderful book, The Great Escape: Health, Wealth, and the Origins of Inequality. . . . Deaton's book is a magisterial overview of health, income, and wealth from the industrial revolution to the present, taking in countries poor and rich. Not just jargon-free but equation-free, the book is written with a beautifully lucid style. . . . [P]owerfully argued and convincing.

Height is probably 95 per cent genetic.