This section is from the book "Practical Dietetics With Special Reference To Diet In Disease", by William Gilman Thompson. Also available from Amazon: Practical Dietetics with Special Reference to Diet in Disease.
The dietetic treatment of cardiac palpitation is sufficiently indicated under the heading of Flatulent Dyspepsia. Overeating should be avoided, as well as all stimulating foods and beverages. Tea, coffee, and tobacco should be forbidden - at least temporarily. Effervescing drinks of all kinds, from their tendency to produce flatulency, should also be proscribed, as well as all sweets and much starchy food. Laxative foods, especially fruits, will be found useful, for the reason that the primary cause of functional palpitation is often to be found in autointoxication from intestinal indigestion or an overtaxed liver.
 
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