In 1931 a dentist from Cleveland found a valley in Switzerland with 2,000 people, no doctor, no dentist, no policeman, almost no tooth decay, and a cow on every hillside. Weston Price had spent his career looking at rotten mouths in Ohio and wanted to know what a mouth looked like before the shop arrived. The Loetschental had no shop. One road in, closed by snow for months. The diet was raw milk, raw butter, raw cream and raw cheese, off cows that climbed to the high pasture in June and came down in September. Rye bread was baked once a month in the village oven and eaten with cheese cut as thick as the bread. Meat was Sunday. He examined thousands of teeth with no toothbrush in the valley and found decay in 3 of every 100. The Swiss government's own records showed no death from tuberculosis in the valley at a time when it was killing the rest of the country. The first butter after the cows reached the summer grass was deep orange, and the valley carried it to church to give thanks for it. He went down the mountain to the towns the railway had reached, where the shop sold white flour, sugar and tinned food, and found rotten mouths and the tuberculosis ward. Same people. Same mountains. Same cows, a train ride apart. The entire medicine cabinet of the valley was a cow on a hill, and it ran a 97% success rate on teeth without a single qualification between them.