Not only are "obesity, cancer and heart disease" harder problems, they are diseases of wealth: if many in your country die of infectious disease, they are not a

Not only are "obesity, cancer and heart disease" harder problems, they are diseases of wealth: if many in your country die of infectious disease, they are not alive long enough to get cancer or heart disease. The author is essentially suggesting that the gates should spend more money on rich people's health rather than that of the poor. Quite astonishing.