"Because he wasn't raised where health was an issue in the household. There was nobody talkin' about health, probably nobody talking about not smoking or drinking or unhealthy practices, what it could lead to. There was nobody talkin' about that." National Center for Chronic Disease Prevention and Health Promotion hide caption

itoggle caption National Center for Chronic Disease Prevention and Health Promotion

Laticia Aossey was hospitalized while a student at the University of Northern Iowa when she realized she hadn't signed up for health insurance. Matthew Putney/Courtesy of Youth Today hide caption

itoggle caption Matthew Putney/Courtesy of Youth Today

The purple-stained Rothia dentocariosa bacteria are frequently found in the human mouth and respiratory tract. CDC hide caption

itoggle caption CDC
Trina Dalziel/Ikon Images/Corbis

The large British study, begun in 1958, tracked the diet, habits and emotional and physical health of thousands of people from childhood through midlife. iStockphoto hide caption

itoggle caption iStockphoto

A man is screened with a backscatter X-ray machine as travelers go through a security checkpoint at Los Angeles International Airport in 2011. Danny Moloshok/Reuters/Corbis hide caption

itoggle caption Danny Moloshok/Reuters/Corbis

Argelia Zarate, a Mixteco interpreter at the Oxnard School District, encourages students to practice their native languages. Jeremy Raff/KQED hide caption

itoggle caption Jeremy Raff/KQED
Stefano Bianchetti/Corbis

From left: Sodium benzoate, azodicarbonamide, shellac. The images are from Ingredients: A Visual Exploration of 75 Additives & 25 Food Products. Dwight Eschliman/Regan Arts hide caption

itoggle caption Dwight Eschliman/Regan Arts

Democratic presidential candidate Hillary Clinton has ideas about how to rein in health costs that hit consumers in the pocketbook. But would they work? Darren McCollester/Getty Images hide caption

itoggle caption Darren McCollester/Getty Images

Bayer HealthCare, of Whippany, N.J., brought Essure to market in 2002 as a nonsurgical alternative for women seeking sterilization. Bayer acknowledges the device can lead to complications, but says they are rare. Julio Cortez/AP hide caption

itoggle caption Julio Cortez/AP

Michael Doucleff Sr. (right) talks to a longtime customer at Duke Bakery in Alton, Ill. Dan Brannan/Courtesy of Riverbender.com hide caption

itoggle caption Dan Brannan/Courtesy of Riverbender.com

Jane Garcia, CEO of La Clinica de la Raza, which serves 25,000 patients in Contra Costa County, Calif., addresses supporters of expanding health care for undocumented adults. Farida Jhabvala Romero/KQED hide caption

itoggle caption Farida Jhabvala Romero/KQED