According to Prof. Richard Feinman, "Diabetes can be a terrible disease, a disruptor of many lives, a major cause of blindness and amputations — and the suffering is made worse by the fact that for many, there is a cure, a cure resisted by the medical profession." Feinman describes the condition, the history of its treatment, the watershed moment when insulin was discovered, and why insulin injections are "a tricky business." He notes, "Although much research has pointed to a low-carbohydrate or ketogenic diet as the best treatment — often a real cure for Type 2, and ... a powerful adjunct for insulin in Type 1 — the approach is far from being embraced by establishment medicine and instead has been resisted with remarkable vigor."