Inside Michelle Trachtenberg’s health battle as cause of death confirmed

"Geezer" Premiere - 2016 Tribeca Film Festival
Michelle Trachtenberg had been ‘sick for quite awhile’ before her death (Picture: Theo Wargo/ Getty Images for Tribeca Film Festival)

In the lead-up to her death, Michelle Trachtenberg was ‘thrown a lot of curveballs’ when it came to her health.

In February the Gossip Girl and Buffy the Vampire Slayer star was found dead aged 39 at her apartment in New York.

Although her family had requested an autopsy not be performed because of religious reasons – they are Orthodox Jews – it was announced yesterday that she had died due to complications from diabetes mellitus.

Despite no autopsy being conducted, the medical examiner’s office was able to determine her cause of death through a review of laboratory test results.

Although she never spoke publicly about her health battles, a friend recently revealed that Trachtenberg had faced ‘back issues and bone problems and fell a few times’.

In 2019 the actress appeared on a red carpet with a cane and two years later shared a photo of her badly bruised ankle on social media.

Mandatory Credit: Photo by Image Press Agency/NurPhoto/Shutterstock (15170712f) (FILE) Michelle Christine Trachtenberg Dead At 39. Michelle Christine Trachtenberg, 'Gossip Girl' and 'Buffy' Actress, Dies at 39. Police officers, responding to a 911 call, found her unresponsive in a Manhattan apartment on the morning of Wednesday, February 26, 2025, the authorities said. LOS ANGELES, CALIFORNIA, USA - OCTOBER 23: American actress, producer, and writer Michelle Christine Trachtenberg arrives at the InStyle Awards 2017 held at The Getty Center on October 23, 2017 in Los Angeles, California, United States. (FILE) Michelle Christine Trachtenberg Dead At 39, The Getty Center, Los Angeles, California, Usa, United States - 26 Feb 2025
The actress died aged 39 in February (Picture: Image Press Agency/ NurPhoto/ Shutterstock)

After making starring in commercials from when she was just three years old, Michelle made her TV debut in Nickelodeon’s The Adventures of Pete & Pete in 1994, with her first film role in Harriet the Spy the next year.

She went on to find fame appearing in Buffy and Gossip Girl, returning for the reboot in 2022.

However, in recent years she began to retreat from the spotlight, with fans noticing and commenting on her changing appearance on social media.

In January last year she shared a series of posts hitting back at ‘haters’.

‘I’ve received several comments recently about my appearance. I have never had plastic surgery. I am happy and healthy. Check yourself haters,’ she posted on Instagram.

Editorial use only. No book cover usage. Mandatory Credit: Photo by Paramount/Kobal/Shutterstock (5879844c) Michelle Trachtenberg, Rosie O'Donnell Harriet The Spy - 1996 Director: Bronwen Hughes Paramount USA Scene Still Family Harriet la petite espionne
She rose to fame starring alongside Rosie O’Donnell in 1995’s Harriet the Spy (Picture:
Paramount/ Kobal/ Shutterstock)
Mandatory credit: TM & ? 20th Century Fox. No Merchandising. Editorial Use Only. No Book or TV usage without prior permission from Shutterstock Editorial Mandatory Credit: Photo by 20thCentFox/Everett/REX/Shutterstock (14500002b) BUFFY THE VAMPIRE SLAYER, from left: Michelle Trachtenberg, Sarah Michelle Gellar, (Season 5, premiered Sep. 26, 2000), 1997-2003. photo: Richard Cartwright / TM and Copyright ? 20th Century Fox Film Corp. All rights reserved. / Courtesy Everett Collection Buffy the Vampire Slayer - 26 Sep 2000
She went on to appear in Buffy the Vampire Slayer (Picture: 20thCentFox/ Everett/ Rex/ Shutterstock)
Editorial use only. No book cover usage. Mandatory Credit: Photo by CW Network/Everett/REX/Shutterstock (765860n) 'Gossip Girl', Michelle Trachtenberg, 'Desperately Seeking Serena', (Season 1, ep. 114, aired Apr. 28, 2008) 'Gossip Girl' TV Series, Season 1 - 2008
Another notable role was as Georgina Sparks in Gossip Girl (Picture: CW Network/ Everett/ Rex/ Shutterstock)

A week later she shared a selfie, captioning it: ‘Fun fact. This is my face. Not malnutrition no problems. Why do you have [to] hate? Get a calendar.’

Her comments came after some fans questioned if she was ‘sick’ after expressing concern over her ‘thinning hair and eyes’.

Although she never spoke publicly about her health battles, last month a friend told US Weekly that ‘whenever they spoke there was something medically wrong’ with the actress.

What is diabetes mellitus?

Diabetes is a condition that causes a person’s blood sugar level to become too high. There are 2 main types of diabetes:

  • type 1 diabetes – a lifelong condition where the body’s immune system attacks and destroys the cells that produce insulin
  • type 2 diabetes – where the body does not produce enough insulin, or the body’s cells do not react to insulin properly

Type 2 diabetes is far more common than type 1. In the UK, over 90% of all adults with diabetes have type 2.

The NHS states that if you’re diagnosed with diabetes, you’ll need to eat healthily, take regular exercise and have regular checks including blood tests.

Following her death sources said she’d had a liver transplant months earlier.

‘She was very open with those close to her about having the transplant,” says the friend, “but she never went into detail,’ a friend said.

Trachtenberg was also said to have spent a prolonged period in hospital around the same time.

Another source told the same publication: ‘The last time I saw her, something felt off. You could sense something was going on. She was really frail and had been sick for a while.’

(Picture: Michelle Trachtenberg/Instagram)
Fans had expressed concerns for her health in recent years (Picture: Michelle Trachtenberg/ Instagram)
(Picture: Michelle Trachtenberg/Instagram)
However she hit back and said she was ‘happy and healthy’ (Picture: Michelle Trachtenberg/ Instagram)

Following Trachtenberg’s death, her Harriet the Spy co-star Rosie O’Donnell said that she had ‘struggled the last few years’.

In an Instagram tribute, photographer and journalist Amanda de Cadenet revealed Trachtenberg had also recently video called her from a hospital bed and was aware she was gravely ill.

‘Even though you did not look like you, your sweetness and humour were still alive. You knew that death was a high possibility, and I am only sorry that the outcome was not a better one,’ she wrote.

In the past year friends said she’d looked ‘pale, gaunt and very thin’.

‘She was very open with those close to her about having the transplant, but she never went into detail,’ a friend said.

Michelle Trachtenberg at the 15 Years of Siriano Party at Nic's On Beverly on November 2, 2023 in Los Angeles, California (Photo by Gilbert Flores/WWD via Getty Images)
Trachtenberg’s cause of death was revealed to have been from complications from diabetes (Picture: Gilbert Flores/ WWD via Getty Images)

When news of her death broke, a representative for Trachtenberg confirmed that it was ‘with great sadness to confirm she has passed away’.

‘The family requests privacy for their loss. There are no further details at this time,’ they said.

Soon after several of her former co-stars paid tribute, including Buffy’s Sarah Michelle Gellar, Gossip Girl’s Blake Lively, Ed Westwick and Chace Crawford and Princess Eugenie, who was close friends with the actress.

At the time of her death, she’d been in a relationship with her agent, Jay Cohen, for five years.

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