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Saturday, October 17, 2026
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‘It has made me live life more’: Jessica Cornish on her health battle, career returns and conquering the Chinese market

You wouldn’t believe it, Jessie J says. There she was gearing up for her comeback record in eight years, ecstatically in love with her newish partner, and at long last the parent to a young child after facing fertility challenges for a decade, feeling invincible. Then in March she was diagnosed with cancer in her breast.

The musician, real name J. Cornish, is renowned for telling it as it is. The record, her latest release, was supposed to be an transparent story, tackling every ounce of devastation she’d experienced since she last recorded music (endometriosis, losing a baby, unsuccessful partnerships, emotional abuse, suicide) with her usual frankness. The first single, No Secrets, was launched in the spring. But by then there was a mighty secret. The cancer. Then second single, her song Living My Best Life, debuted in late spring and she was speaking publicly about how she was enjoying life to the fullest, while at the same time coping with breast cancer. A month later she disclosed her condition, and in July she had a mastectomy.

She shoots me her best “Seriously?” glance. “I put out with a song called the track No Secrets. I’m giving every media appearance, and they inquire, ‘Any updates?’ and I’m, like, ‘Uh, nothing really’” the singer has just had to cancel tour dates because she’s yet to undergo reconstructive surgery.

We meet at a studio in London. She is dressed in a tan faux-leather coat, denim trousers with detailed white appliqués, beige footwear and big frames. Think motorcycle style meets 70s singer aesthetic. “It seems like I’m in the seventies and I should have a partner with a mustache.” Like the film, I say, referencing the picture. “I was nicknamed that in school!” She beams. She is sharp-witted, irreverent and filter-free. She says she has always fancied doing comedy and is planning to attempt her standup debut next year. “I like entertaining. When performing I basically roast the audience.”

Health Struggles and Diagnosis

Cornish was preparing for an slot at the ceremony when she noticed an abnormality. “I immediately went to get it looked at, had an ultrasound, and they were, like, ‘It seems benign; you’ve got really good dense breast tissue.’ And I was, like, ‘However, it’s there. My arm hurts and tingling in my hands whenever I rise.’ And they suggested, ‘We should biopsy it?’ That was 28 March, the post-birthday.” It was a weekend eve. The doctor told her if it was bad news she’d contact on the Monday. By then the singer had convinced herself it was fine. The way she tells it, it was just bad timing to face illness when she had many commitments.

“Just two weeks before from debuting the project after years away and no new music. And the doctor messaged and said, ‘Can you talk at six?’ And I assumed, ‘It’s virtual, probably routine.’ So I log in expecting it’s all going to be fine, and she says, ‘Please take a seat.’ You know that sad tone they use? And she continues, ‘I regret to inform you but your biopsy results have shown malignant cells.’” What did you say? “I replied, ‘Well, that’s not great. What awful timing.’ Immediately I felt was, ‘My child depends on me.’”

I’ve been labeled difficult for knowing myself

She found the surgery terrifying and absurd. “I dislike anesthesia. They walk you down. During crises you go on a gurney, but this time I just walked with a gown on and my backside out. You feel like you’re in an episode of Black Mirror.” But, she notes, she’s been blessed. No chemotherapy or radiation, just the op. “It’s terrible, but yet Luckily it was detected early. I had the mastectomy a few months back and my one side now looks like a grapefruit under a tight bedsheet.” A further beam. “The nipple was preserved.”

The subsequent surgery is for health and appearance. Her chest, she notes, are now “asymmetrical. The implant is larger than before. So inconsiderate! I thought, no need to bully me, I’m already having a difficult experience. Such disrespect! Ironically I said I’d avoid breast surgery because I’ve got obsessive tendencies, and I know they’d never be ideal. Cancer ruined that plan.”

Past Medical Issues

She is accustomed to medical issues. She feels her outlook on her diagnosis has been so upbeat because she’s familiar with health crises. They have often coincided with professional successes, acting as a reminder, or punch in the stomach, to highlight not to assume everything is fine. “Honestly, I feel fate says, ‘Enjoying yourself? Sit down.’ From a young age, it has consistently accompanied achievements for me; a serious or unusual issue has impacted my body.”

She takes me back to her childhood, already starting her career featuring in the stage in Whistle Down the Wind (she was selected at the age of nine years old). That’s when she was told about the cardiac issue a syndrome, which can cause a rapid pulse as well as lightheadedness and irregular beats. “I attended rehearsals intermittently on an IV drip, and being readmitted at night.” She fast-forwards half a dozen years, and 17-year-old Jess has joined the female band Soul Deep while attending the performing arts school. “I just got my first record deal, and I had a brain incident. Then when I was ready to debut in the year 2020 I had a collision and my larynx moved up and I lost my voice for a year.”

Wow, I say, slow down, I need a moment. A stroke so young? She nods|agrees

The writer

Jamie Harvey

Elara is a certified fitness trainer and wellness blogger passionate about home workout solutions and healthy living.

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