Kelly Clarkson reportedly feels guilty over her ex-husband Brandon Blackstock’s death, questioning whether the stress of their contentious divorce was detrimental for his health.

Blackstock — who was married to Clarkson from October 2013 to March 2022 — died earlier this month at the age of 48 following a private, three-year battle with melanoma, the most aggressive form of skin cancer.

“Kelly is aware of talk that stress can impact the body and make someone more susceptible to cancer,” a source told the Daily Mail Wednesday.

Kelly Clarkson reportedly feels guilty over her ex-husband Brandon Blackstock’s death, questioning whether the stress of their contentious divorce was detrimental for his health.GC Images

Blackstock — who was married to Clarkson from October 2013 to March 2022 — died earlier this month at the age of 48 following a private, three-year battle with melanoma, the most aggressive form of skin cancer.Getty Image

“Although the timing could be purely coincidental, she knows how much tension the divorce and lawsuits put on them.”

While the source insisted Clarkson, 43, “doesn’t blame herself,” they emphasized that she’s “conscious that the double whammy of the divorce and the fact that he had to repay her millions of dollars was very tough on him.”

A second source echoed the sentiments, noting that the “American Idol” Season 1 winner “doesn’t want to harp on about what this might have done for Brandon’s health, but it does cross her mind. And it does make her think that maybe she could [have] done more, even though that is unrealistic at its core.”

“Kelly is aware of talk that stress can impact the body and make someone more susceptible to cancer,” a source said.Getty Images for FIJI Water

“Although the timing could be purely coincidental, she knows how much tension the divorce and lawsuits put on them,” the source added.MediaPunch / BACKGRID
According to the second source, Clarkson set aside the “frustrating” split “once the cancer came into the situation.”

The Grammy winner reportedly “felt bad” and immediately jumped into action to “protect” their children: daughter River, 11, and son Remington, 9.

The source added that “being there for her kids is helping her to cope with the onslaught of emotions.”

A rep for Clarkson did not immediately respond to Page Six’s request for comment.