In 1939 Peter Kelder published his book "The Eye of Revelation" Download Here about the discovery of the monks who developed The Five Tibetan Rites. In this book he also revealed the health-giving diet secrets of the monks which is fairly similar to what we call Food Combining today.
Here are a couple of the monks dietary recommendations:
The monks said you should keep starches, fruits and vegetables separate from meats, fish and fowl.
Starches clash with proteins. If you eat bread (starch) with meats, egg or cheese (protein) a reaction is set up in the stomach which not only causes discomfort, but more importantly contributes to a shorter lifespan.
Around the same time as 'The Eye of Revelation,' Dr William Howard Hay published (1933) a ground-breaking book, 'A New Health Era' in which he maintains that all disease is caused by autotoxication (or "self-poisoning") due to acid accumulation in the body:
His assertion was that disease had one underlying cause: an incorrect chemical balance in the body, caused by the production and accumulation of acid end-products of digestion and metabolism, which the body is unable to eliminate. The result of this is a reduction in the body’s alkaline reserve, which causes a breakdown in good health. He maintained that there were four main causes of this accumulation of acid end-products: over consumption of meat; over-consumption of refined carbohydrates, e.g., white flour and refined sugar; ignorance of the laws of chemistry in respect of the digestion of foods; and constipation. He taught his patients that, although people could build up a tolerance of incompatible foods, they did so at the expense of the body’s vitality. He also taught the importance of daily baths, exercise, fresh air, rest, and sunshine.
Some of the recommendations are very similar to those of the monks - see below:
Do not eat carbohydrates with proteins and acid fruits at the same meal.
Eat vegetables, salads and fruits as the main part of your diet.
Eat proteins, starches and fats in small quantities.
Despite Dr Hay’s enormously successful treatment of many seriously ill patients with his system, it was criticized vehemently by the medical establishment, which, at that time, was focused on the germ theory of disease, and the increasing use of drug treatment. However, he defended his system courageously, continuing to treat patients, and lecture, until his death in 1940.