Michelle Trachtenberg's Cause Of Death Revealed By Medical Examiner

We now know what took the life of actress Michelle Trachtenberg at just 39 years old.

Trachtenberg died naturally as a result of complications from diabetes mellitus (the scientific term for diabetes), according to a statement from New York City's chief medical examiner provided to our sister site Deadline. Trachtenberg had been dealing with health problems prior to her death and underwent a liver transplant just months earlier.

Initially, it was announced that Trachtenberg's cause of death would remain undetermined, with her family declining an autopsy for religious reasons.

Trachtenberg was found dead on Feb. 26 in a New York City apartment near Columbus Circle. She was best known to TV fans for playing Buffy's sister Dawn on Buffy the Vampire Slayer, debuting in the Season 5 premiere and appearing in every episode of the final three seasons. She also played Georgina Sparks on Gossip Girl for six seasons, along with roles on Six Feet Under, Weeds, Sleepy Hollow and Criminal Minds. Her film credits include Harriet the Spy and EuroTrip.

"It is with great sadness to confirm that Michelle Trachtenberg has passed away," a spokesperson for the actress said in a statement to TVLine at the time of her passing. "The family requests privacy for their loss."