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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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Genetic Testing
Preparation & Expectations
What is involved in preparation for the test?
Biochemical tests may require fasting or special diets prior to collecting the sample needed. DNA tests and chromosome analysis require no special preparation. People being tested, however, must not have had a blood transfusion for several weeks prior to collection of the specimen.