Parkinson's may start in the gut and travel up to the brain, suggests a new study in mice published today in Neuron, which found that a toxic neuron-killing protein (α-syn) associated with Parkinson's disease originates among cells in the gut and travels up to the brain via the vagus nerve.

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Parkinson's may start in the gut and travel up to the brain, suggests a new study in mice published today in Neuron, which found that a toxic neuron-killing protein (α-syn) associated with Parkinson's disease originates among cells in the gut and travels up to the brain via the vagus nerve.