Long-term dietary zinc from multi-vitamins or other supplements in PCa patients showed a non-significant 2.0-fold elevation in PCa risk in the US hospital-based Case-Control Surveillance Study (1706 cases, 2404 matched controls).16 Epidemiologic evidence has also revealed an interaction between dietary zinc intake and cadmium exposure in relation to PSA levels. Here, KLK3 is linked to posterior cortical atrophy.