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Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
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Sedative
Sedative: A drug that settles down, calms, and moderates excessive stimulation (nervousness) and excitement. The word "sedative" comes from the Latin "sedare" meaning to allay or calm. Potions have long been used to calm people down and permit them to sleep.