[7] Haig experimented and proceeded to demonstrate that uric acid deposits were also responsible for eczema, jaundice, gastritis and flatulence.
[16] On this diet all meats, legumes and some vegetables were eliminated including asparagus, beans, lentils, mushrooms, peas and whole grain products.
"[15] Haig criticized ordinary vegetarian diets as asparagus, beans, lentils and mushrooms contain purines and thus produce uric acid.
[7][14] Haig argued that cancer, gout and rheumatism are allied diseases that are the result of an excess of uric acid and can be treated by dietetic therapy.
"[20] During 1911–1912, Haig attempted the cure several cases of inoperable cancer with his uric-acid free diet consisting of biscuits, fruits and nuts.
In 1935, Carl Malmberg wrote that "although Haig's theory was no longer accepted in scientific circles it continued to exert an influence on the general public as well as on a number of doctors.
[26][27] A 1898 review in the Journal of the American Medical Association suggested that "to those not familiar with the work the book will be a revelation, not only on account of the undisputed facts which the author produces, but for the forceful manner in which they are arranged.
"[28] A review in the Canadian Journal of Medicine and Surgery supported Haig's research on uric acid and described it as "exceedingly readable".
For example, the reviewer doubted Haig's assertion that uric acid controls the metabolism and combustion of the body and determines the incidence and course of disease.
[30] A review in the Chicago Medical Recorder for the fifth edition commented that Haig was too extreme in his views but the book should be read by every physician.
[31] The New York Medical Journal found the fifth edition too long but concluded that "the book deserves the attention of every physician who would perfect himself in his profession.
[34] A review in the New York Medical Journal commented that "there can be no doubt that Dr. Haig is an original thinker, and has the courage which goes with conviction.
"[36] An article in the Journal of the American Medical Association in 1904 objected to Haig's uric acid theories but praised his dietary results.
[38][39] A 1908 review in the Journal of the American Medical Association for the seventh edition commented that although the book had a wide influence on English physicians the theories of Haig were repudiated by the scientific world.
[22] The reviewer stated that the Haig's theories were erroneous but remained popular due to the conservatism amongst "physicians who hesitate to abandon old views and fail to keep abreast of scientific progress.
"[22] A review the same year published in the British Medical Journal, commented that Haig's theory of the existence of uric acid in a colloid form was an unsubstantiated hypothesis.
[15] In 1909, Alexander Bryce commented that although the uric-acid free diet is a valuable method of treatment for certain patients it is too extreme for ordinary purposes of nutrition in every-day life.
[40] Arthur J. Cramp of the American Medical Association stated in 1914 that Haig's methods were unreliable and his theories are "utterly discredited".
[7] Miles took up Haig's diet claiming multiple health benefits but later gave it up as he found that legumes aided his vitality.
[7] Karl Mann, a German vegetarian walker switched to Haig's diet in 1898 and won an international Dresden-Berlin race in 1902.