医学已经知道如何治疗2型糖尿病230年，其中180年都做对了，而过去50年却一直在开处方治疗其病因。

1674年：一位牛津医生品尝糖尿病患者的尿液，发现其甜味，并因此命名了这种疾病。

1797年：一位英国陆军外科医生让一位糖尿病军官只吃肉和脂肪，别无他物。几天内，糖分从他的尿液中消失。他发表了这个病例。

1870年：巴黎被围困，面包断供。城里的糖尿病患者病情好转，观察他们的医生记录下来，并以此建立了自己的职业生涯。

1870年代：一位意大利医生将糖尿病患者关在一个房间里，只提供肉和水。他们康复了。欧洲各地的教科书纷纷抄袭他的做法。

1892年：英语世界最著名的医学教科书开出肉、脂肪和绿色蔬菜的处方，并称淀粉对糖尿病患者是毒药。

1916年：美国顶尖糖尿病专家的著作将碳水化合物列在最底部，脂肪列在最顶部。

1921年：胰岛素。对无法产生胰岛素的儿童来说，这是奇迹。对其他人来说，这是药片形式的出路。

1950年代：饮食悄然放宽，因为药物可以掩盖其影响。

1971年：美国糖尿病协会推荐45%的热量来自碳水化合物。

1986年：提高到60%。对于一种诊断标准就是无法处理碳水化合物的疾病。

2008年：低碳水化合物饮食被认可，作为一种选择，在脚注中提及。

2019年：同一个协会承认，低碳水化合物饮食是针对该病况的任何饮食中证据最多的。

2026年：诊所里的饮食指导表仍然显示燕麦粥、全麦面包、土豆和水果。

长达180年，每一位研究这种疾病的医生都让患者吃肉和脂肪，并亲眼看着病情消退。

然后一种药物出现了，让他不再需要观察，饮食建议随之逆转，此后病例数每年都在上升。

书中最古老的疗法，是你的医生从未学过的，而那本书正是他的。

Medicine has known how to treat type 2 diabetes for 230 years, got it right for 180 of them, and has spent the last 50 prescribing the cause.

1674: an Oxford physician tastes a diabetic's urine, finds it sweet, and names the disease for it.

1797: a British army surgeon puts a diabetic officer on meat and fat, nothing else. The sugar leaves his urine in days. He publishes the case.

1870: Paris is under siege and the bread runs out. The city's diabetics get better, and the doctor watching them writes it down and builds a career on it.

1870s: an Italian physician locks diabetics in a room with meat and water. They recover. Textbooks across Europe copy him.

1892: the most famous medical textbook in the English language prescribes meat, fat and green vegetables, and says starch is poison to the diabetic.

1916: the leading American diabetologist's own book lists carbohydrate at the bottom and fat at the top.

1921: insulin. A miracle for the child who makes none. And a tablet-shaped way out for everyone else.

1950s: the diet quietly loosens, because the drug can cover it.

1971: the American Diabetes Association recommends 45% of calories from carbohydrate.

1986: raised to 60%. For a disease whose diagnosis is a failure to handle carbohydrate.

2008: low-carbohydrate acknowledged, as an option, in a footnote.

2019: the same association admits low-carbohydrate eating has the most evidence of any diet for the condition.

2026: the diet sheet in the surgery still shows porridge, brown bread, potatoes and fruit.

For 180 years every doctor who looked at the disease fed it meat and fat and watched it go.

Then a drug arrived that let him stop looking, and the diet reversed, and the count has gone up every year since.

The oldest cure in the book is the one your doctor was never taught, and the book was his. @SamaHoole