In the 1920s, doctors advised that everyone over the age of eighteen should consume at least a third of a cup of pure butter each day, the theory being that doing so would help lubricate the arteries and therefore provide better circulation. As recently as the 1950s, physicians recommended that a person smoke a cigarette following each meal in order to facilitate better digestion. Modern physicians would balk at such suggestions, while wholeheartedly recommending dietary habits such as two glasses
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