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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An infant who is unconscious due to choking will be unresponsive.
The rescuer will be unable to push air into the lungs with mouth-to-mouth
breathing. Bystanders may report an episode of choking, followed by
unconsciousness.