Kim K and Gwyneth Won't Stop Selling Scans Doctors Call 'Quackery'

Kim Kardashian called it "#NotAnAd" in 2023. The post tagged Prenuvo, a company selling full-body MRI scans for $2,500, and praised its ability to spot aneurysms and cancers before symptoms appear. Celebrities and their publicists absorbed the playbook. Two years later, the endorser list covers three Oscar nominees, a James Beard-adjacent reality star, and a Broadway legend. Almost every post came with a discount code.

Pajiba counted them in October 2026: Constance Wu, Gabourey Sidibe, Lori Harvey, Lance Bass, Antoni Porowski, Melissa Fumero, Natasha Lyonne, Casey Wilson, Ariana DeBose, Gwyneth Paltrow, and Kim Kardashian. Eleven names, one brand, a product that costs more than most Americans spend on a month of groceries.

What Doctors Say About These Scans

Saurabh Jha, a radiologist at Penn Medicine, described the product to STAT News as "all just humbug, bordering on quackery" from a physician's perspective. He is not the only one. Radiologists have been warning about full-body screening MRIs for decades: the scans regularly flag benign abnormalities that generate invasive follow-up procedures without extending anyone's life. Insurance companies agree with the skeptics. Insurers will not cover full-body preventive MRIs without large clinical trials showing clear benefit, and Prenuvo has not run those trials.

The logic the sponcon depends on is simple: a celebrity got scanned, the scan found something, that something got treated, and therefore you should get scanned too. The problem is that anecdotes about a 38-year-old influencer's scan results are not health data. Population-level screening evidence is health data, and it does not currently support spending $2,500 on a preventive whole-body MRI for a healthy person.

The Lawsuit That Survived Court

Sean Clifford, 35, a Manhattan resident, had a Prenuvo full-body MRI in July 2023. The report came back clear: no major problems. On March 7, 2024, eight months later, he had a stroke. He lost function in his left hand and left leg. His lawsuit, filed in January 2026, alleges that one of his scan images showed a dangerously narrowed cerebral artery and that a radiologist hired by Prenuvo to read the images made what a cited expert called "an obvious miss."

Prenuvo denied the allegations. A judge allowed the case to proceed in December 2025. Prenuvo's patient consent form notes that no medical test can detect all conditions. That language exists in most diagnostic contracts. The lawsuit's argument is that this one missed something a competent radiologist would have caught.

Why $120 Million Changed Hands

Prenuvo closed a $120 million Series B in 2024, led by Forerunner Ventures and Left Lane Capital. The company reported roughly $100 million in revenue that year and 110,000 members. This is not a startup hoping celebrities notice them. The celebrity endorsement program is the distribution strategy. Discount codes are the tracking mechanism. This is direct-response wellness marketing dressed in the aesthetics of preventive medicine.

The structural problem is that the endorser and the patient bear entirely different risk profiles. Kim Kardashian posts, collects a fee or a partnership arrangement, and moves on. The person who books the scan on the back of that post is the one who lives with the follow-up procedures, the false positives, or in Clifford's case, a missed real positive. That asymmetry is not a quirk of the Prenuvo model. It is the wellness sponcon model.

The Clifford lawsuit did not settle quietly. It survived a motion and is heading toward discovery. That is the information the discount codes never disclose.

Sources & further reading

• Pajiba: Why Are Celebrities Doing Sponcon for Full Body Scans? (Oct 12, 2026)
• The Philadelphia Inquirer: Full Body Scan Stroke Lawsuit (Jan 13, 2026)
• STAT News: Kim Kardashian Promotes Full Body MRI Scans, Drawing Expert Concern (Aug 11, 2023)
• Medical Device Network: Prenuvo Raises $120M Series B (Feb 13, 2025)