(Lauren Petracca/For The Washington Post)
A surprise discovery unearthed a large cache of World War II documents that had been lost to history.
By Meryl Kornfield
(Timo Lenzen/For The Washington Post)
New studies raise questions about the use of Vitamin D, omega-3 fish oil and glucosamine supplements in some people.
By Ariana Eunjung Cha
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