When your smoking habit erases the antioxidant-boosting effects of eight hundred cups of kale, you know it’s time to quit. Carcinogen-Blocking Effects of Turmeric The Indian spice turmeric, which gives curry powder its characteristic golden color, may also help prevent some of the DNA damage caused by smoking. Since 1987, the National Cancer Institute has tested more than a thousand different compounds for “chemopreventive” (cancer-preventing) activity. Only a few dozen have made it to clinical trials, but among the most promising is curcumin, the bright-yellow pigment in turmeric.12
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