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Prenatal exposure to air pollution linked to autism risk, study says

Prenatal exposure to ambient air pollution was associated with an increased risk of autism spectrum disorder, a new study finds. Pregnant women in Vancouver who were exposed to the highest level of environmental nitric oxide, an airborne, traffic-related pollutant, were more likely to give birth to children later diagnosed with autism, the researchers say.

FDA proposing new rules to fight rise in underage vaping

Vaping increased nearly 80% among high schoolers and 50% among middle schoolers since last year, prompting the US Food and Drug Administration to propose new measures against flavored nicotine products that have propelled the rise, the agency announced Thursday.