Sen. Tim Scott, R-S.C., speaks during the Values Voter Summit, held by the Family Research Council Action in Oct. 2013. Jose Luis Magana/AP hide caption
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Disease susceptibility varies among ethnic groups, but medicine hasn't always recognized that. Jo Unruh/iStockphoto hide caption
Mike Jackson has diabetes and high blood pressure. His eye was damaged after he cut back on insulin because he couldn't afford it. Bryan Terry for NPR hide caption