Dear Doctor: Can a fruit diet persisted in for a period of two weeks cure a stubborn skin disease of long standing? A.W. Such a fruit diet may be the direct cause of skin disease, instead of a cure. ·with many people the taking of fruit in conjunction with the meal inhibits or prevents the normal secretion of hydrochloric acid and pepsin. Food lies in the stomach without sufficient peptic juices properly to convert the albumen into peptones. At the same time, a decided fermentation is caused in the starchy and sugary particles of food, as well as in the cellulose material found in vegetables and fruit.