According to The Sensitive Gut, a book published by Harvard Medical School, it has been estimated that “up to 70 percent of the world’s population has some sort of problem with lactose. ”
Nagu kirjutatakse Harvardi Meditsiinikooli avaldatud raamatus „The Sensitive Gut ”,„ on arvestuste järgi kuni 70 protsendil maakera rahvastikust laktoosiga probleeme ”.