Very interesting article:
"Orwell was describing something that has become one of the world’s neglected scourges: the bad diet of the poor. When people think of malnutrition, they usually picture its most acute form—listless infants with bloated bellies, the little victims of famine. But there is a chronic manifestation of hunger, too, milder but more widespread. It affects those with enough calories to eat but too few micronutrients (vitamins, minerals and so on). They suffer the diseases of poor nutrition."