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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Quinine
Quinine: A classic antimalarial agent, quinine took its name from
the Peruvian Indian kina meaning bark of the tree (they called it the fever tree), the
cinchona tree from which quinine was first gained.