Low cancer rates among patients with Parkinson's disease

Abstract

Among 406 Patients with Parkinson's disease, the cancer rate (all sites combined) was about one‐third that for the general population. The risk of cancer increased during the treatment period but remained significantly low. Malignant and benign thyroid neoplasms were significantly more frequent than expected among patients with Parkinson's disease. We suggest that high level of total body potassium in patients with Parkinson's disease is the projective factor against cancer.