When transgender youths have access to a puberty blocker, their chances of suicide and mental health problems in the immediate term and down the road decline significantly, a new study finds.

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Read CNN's Autism Fast Facts and learn more about autism and autism spectrum disorders.

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Of all the alarming aspects of the rapidly spreading new virus out Wuhan, China, this is perhaps the most alarming: A single patient has infected 14 health care workers.

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An outbreak of new coronavirus in China has sickened more than 600 people and killed at least 17, while spreading to countries around the world.

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Newly discovered fossils of humans and animals, as well as other evidence of their path through history, from around the world.

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Snakes -- the Chinese krait and the Chinese cobra -- may be the original source of the newly discovered coronavirus that has triggered an outbreak of a deadly infectious respiratory illness in China this winter.

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What started as a mystery virus last month in Wuhan, China, has now killed at least 17 people and infected hundreds more around the world.

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CNN's Dr Sanjay Gupta looks at what you need to know about the Wuhan virus and coronaviruses like MERS and SARS in general, from what they are to how you can treat them.

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Love dogs but find yourself uncontrollably sneezing around some of them? There might be a solution that's easier than allergy shots. Neuter your male pup or opt for a female dog.

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A 4-year-old girl in Iowa nearly died and is now blind because of the flu, and her parents have a message: Get your child vaccinated.

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Pediatricians across the United States are sounding the alarm about unusually high numbers of young children being admitted to emergency departments due to respiratory syncytial virus infection or RSV, a common virus that causes cold-like symptoms.

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More common heartburn medications have been recalled due to the presence of an impurity that might cause cancer.

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Have you ever asked yourself: Do I have a fat tongue?

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Almost 2 million people in Hong Kong --- about a third its adult population -- are estimated to have experienced symptoms of post-traumatic stress disorder (PTSD) during months of social unrest in the city, according to research published Friday in The Lancet medical journal.

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A massive genetic study in nearly 200,000 veterans with anxiety is providing new insights into how and why people may be pre-disposed to anxiety issues.

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