Final answer:
The patient should be advised that eating a high-protein diet can reduce the effectiveness of levodopa.
Step-by-step explanation:
The best response to the patient is: c) "Eating a high-protein diet can reduce the effectiveness of levodopa."
Levodopa is a medication used to treat Parkinson's disease, and it works by increasing dopamine levels in the brain. However, proteins in the diet can interfere with the absorption of levodopa and reduce its effectiveness. This is because proteins compete with levodopa for absorption in the small intestine.
By advising the patient to reduce her protein intake, she can improve the effectiveness of the levodopa and better manage her symptoms of Parkinson's disease.
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