Health Nov 21

Dementia rates decline sharply among senior citizens

A new study finds that the prevalence of dementia has fallen sharply in recent years, most likely as a result of Americans’ rising educational levels and better heart health, which are both closely related to brain health.

Thursday on the NewsHour, Egypt and Russia dispute the suggestion that a bomb caused a Russian jetliner crash. Also: Defense Secretary Ash Carter visits the South China Sea as tensions rise, the U.S. upgrades their nuclear arsenal, the mysterious disease…

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