Randy Olsen looks at the correlation between income and height. This correlation has been discussed and debated for years. It has been widely accepted that poverty and the lack of proteins are well known to stunt growth as well as reduces IQ but this is one of the first looks that would show this continues even when compared to higher income countries. Arvind Panagariya, a trade economist at Columbia University, recent article in Economic and Political Weekly suggests that perhaps the stunted growth of Indian children is not a problem. He proposes that Indian children are simply genetically short, and therefore, their heights are nothing to worry about. It would certainly be nice if this were true. But the main thrust of Panagariya’s views are open to simple scrutiny: his opinion is that because differences in income, mortality, and food cannot account for the average difference in height between people in India and people in Africa, the gap must be made up of differences in average genetic potential.
The argument is further supported by the stagnation of Dutch incomes in the late 1800’s also corresponded with a dip in heights.
Also check out the research the Rice Institute