Danius passed away on Saturday morning after a long illness, Swedish media including SVT reported.
"The family deeply mourns her passing and looks back on her life with great gratitude, pride and joy," her family said in a statement provided to TT.
A professor of literature at Stockholm University and a prominent essayist, Danius published a series of essay collections.
She was best known for her time in the Swedish Academy, however.
After becoming a member in 2013, Danius was later chosen as Permanent Secretary in 2015 – the first woman ever to hold the prestigious post.
”There was a shimmer around her, stylistically and intellectually. The Swedish cultural world will be poorer without her. My thoughts go to her closest family, it is a terrible loss,” Dagens Nyheter culture editor Björn Wiman said in the newspaper’s report of her passing.
Born in 1962, Danius began her career as a journalist before switching to academic studies in the 1990s. She earned her doctorate degree from Uppsala University in 1999 and was appointed Professor of Aesthetics at Södertörn University in 2008.
She became a professor of literature at Stockholm University in 2013, the same year she was chosen as a member of the Swedish Academy.
As Permanent Secretary, she was the voice and face of the body that awarded the Nobel Prize in Literature to Belarussian journalist Svetlana Alexievitch, US songwriter Bob Dylan and British novelist Kazuo Ishiguro.
She resigned in 2018 in the wake of a scandal that emerged from the #MeToo movement to halt sexual abuse, and forced the Academy to postpone awarding the literature prize that year.
She later described the events as "one of the biggest culture scandals ever in modern Swedish history".
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