"And that's what this method does - it captures the complexity of the puzzle and the interaction of all these genes together to produce exceptional longevity."

VOA: standard.2010.07.14

Autoimmune disorders are still one of the big medical mysteries, though scientists are picking away at the interaction of genes and the environment they believe to be responsible.

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Depression is caused by an interaction between genes and environment.

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Alzheimer's is probably caused by a complex interaction of many genes, and it is possible those with the APOE4 gene are less able to repair their injured brains.

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