>>35999
That's what malnutrition means, insufficient or unbalanced diet.
>>36014
>zulus,being the tallest
They're not the tallest, the tallest people in the world are in the Balkans and Netherlands.
Height is correlated with quality of life, and if a population gets taller it probably means diet and overall health has improved. It doesn't really help at confronting different populations though, as far as I know.