By Donna Westfall – January 29, 2018 – There's a mutant gene linked to tumor growth as in cancer. It's called P53 or Quercetin. If you're looking for natural methods of combating cancer growth, foods high in quercetin (including onions, capers, blackberries, raspberries, black and green tea, dark cherries, cocoa powder, kale, apples, and herbs like sage and parsley) suppresses cancer cell proliferation. A diet high in those listed is said to inhibit the activity of P53. In Crescent City all of those foods, herbs and teas are readily available.