For years, researchers have baffled over why well-off northern nations have cancer rates numerous times higher than those in budding countries — and many have placed the guilt on risky impurities discharged out by industry. But study into vitamin D is signifying both a reasonable answer to this medicinal enigma and a unorthodox notion: that cancers and other syndromes in wealthy countries aren’t caused mostly by toxins but by a vitamin insufficiency identified to be less discriminating or even absent in poor nations. Not everybody is enthusiastic to jump on the vitamin D bandwagon just until now. Perhaps, vitamin D’s end product is about to go off.