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As with so many diseases, the single greatest risk factor for Parkinson’s is aging.—Adam Cohen, Oklahoman, 24 Mar. 2026 Previous research has shown that parent obesity is a risk factor for childhood obesity, and that parent stress may be an additional hidden driver of early childhood obesity.—Karen Guzman, Hartford Courant, 21 Mar. 2026 The genetic risk factor Those major risk indicators are what ushered me into my own cancer prevention safari.—Zachary Bernstein, Los Angeles Times, 17 Mar. 2026 Age is the most common risk factor.—Erica Sweeney, SELF, 16 Mar. 2026 See All Example Sentences for risk factor