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Warning of the consequences of cigar smoking on the lungs and the adverse effects of chewing tobacco on the digestive system, he pleaded with the students to quit then this pernicious habit.Take all your cigars and tobacco, and in some calm evening carry them on to the common, and there sacrifice them to health, cleanliness, and decorum. From Tobacco on campus, 1804 and today Letter by Alan Blum, MD In Mayo Clinic Proceedings Volume 82, number 5, page 639 2007 Alan Blum, MD discusses Dr