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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 Screening
Preparation & Expectations
What is involved in preparation for the test?
Screening for some compounds in the blood or urine may require fasting or a special diet before the test. DNA tests and chromosome analysis do not require preparation. A person should consult the healthcare provider for specific instructions.