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Food and Drug Administration

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Breaking down the science of sunscreen

A study in JAMA analyzed blood samples of 24 people who used sunscreen four times a day, for four days. Researchers found levels of four chemical ingredients that exceed the FDA’s recommended limits. The authors caution that the health effects, if any, are unknown, and people should continue to apply sunscreen to protect against skin cancer. As we continue our coverage of Skin Cancer Awareness Month, Dr. Tara Narula joins "CBS This Morning" to separate sunscreen fact from fiction.

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E-cig bans: Are they legal? Are they safe?

San Francisco will become the first U.S. city to ban e-cigarette sales, after a unanimous vote by its board of supervisors on Tuesday. The mayor has indicated she will sign the measure. E-cigarettes have not been approved by the FDA, and the agency has called e-cigarette use by young people an “epidemic.” CBS News medical contributor Dr. Tara Narula and CBS News legal analyst Rikki Klieman join “CBS This Morning” to discuss the safety and legality of the ban.

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