A History of Fat Freezing: From Popsicle Panniculitis to Modern Cryolipolysis

It started, of all places, with a popsicle. In 1970, doctors writing in the New England Journal of Medicine described an infant who had developed firm lumps in the cheeks after sucking on an ice lolly. They called it “popsicle panniculitis” — and although nobody knew it at the time, this odd little case report, revisited in clinical reviews of cryolipolysis, helped sow the seed for a treatment that would, decades later, become one of the most popular non-surgical ways to reduce stubborn fat.

This is the story of how a century of curious observations about cold and fat became cryolipolysis: the science, the people, and the milestones along the way. If you want the full mechanism, our guide to how fat freezing works goes deeper — but the history is fascinating in its own right.

A century of clues: cold and fat (1902–1970s)

The idea that cold can selectively damage fat is far older than any modern device. It surfaced repeatedly in medical literature long before anyone thought to harness it deliberately.

• 1902 — Austrian physician Carl Hochsinger described firm nodules beneath the chins of children after cold exposure: an early account of cold-induced panniculitis.
• 1941 — H. Haxthausen documented a similar effect in children’s cheeks, coining the term adiponecrosis e frigore, meaning “fat necrosis from cold”.
• 1963 — Cold panniculitis was reported in a young adult, extending the observation beyond infants.
• 1970 — Epstein and colleagues published the famous “popsicle panniculitis” case in the New England Journal of Medicine.

There was even an “equestrian” version: a woman who rode a horse in bitterly cold weather later developed fat loss in her thighs. Time and again, the pattern was the same — exposure to cold, followed by a selective change in fatty tissue while the overlying skin recovered unharmed.

For most of the twentieth century these were treated as medical curiosities. The leap was realising that an accidental side effect could, with enough precision, become a deliberate treatment.

The Harvard breakthrough (2007–2008)

The decisive moment came in 2007, when Dr Dieter Manstein of Massachusetts General Hospital and Dr R. Rox Anderson of the Wellman Center for Photomedicine at Harvard Medical School published a landmark paper formally describing “cryolipolysis” as a non-invasive method of fat reduction.

Working with animal models, the pair established the principles that still underpin the treatment today:

• Lipid-rich fat cells (adipocytes) undergo crystallisation and apoptosis — a controlled, programmed form of cell death — at temperatures that spare water-rich skin, nerve and muscle tissue.
• Combining gentle vacuum suction with carefully regulated cooling produced selective fat reduction, with up to around 40% fat layer reduction observed in porcine models.
• The presence of lipid-laden inflammatory cells confirmed that the body was clearing the affected fat cells naturally, rather than the tissue simply being destroyed wholesale.

In other words, those long-ago popsicle and equestrian observations were no accident: fat really is more vulnerable to cold than the tissues around it. By 2008, a company called ZELTIQ Aesthetics had secured an exclusive licence to turn the science into a commercial treatment.

From laboratory to clinic: FDA clearances (2010–2021)

The treatment most people now recognise as CoolSculpting launched in the United States in 2010. Regulatory clearance did not arrive all at once — instead, it was granted area by area as evidence accumulated. This staged approach is one reason the treatment has such a substantial real-world track record.

The sheer scale of those acquisitions — billions of pounds changing hands — gives a sense of how quickly cryolipolysis moved from an intriguing research idea to a mainstream aesthetic treatment. By 2019, non-surgical fat reduction had become the fourth most common non-invasive cosmetic procedure in the United States, with procedure numbers up by more than a third since 2013.

A crowded field: from one device to many

Through the 2010s, cryolipolysis was no longer alone. A range of competing technologies arrived, each tackling the body contouring problem differently:

• SculpSure — laser-based lipolysis using heat rather than cold.
• Kybella — injectable deoxycholic acid, cleared for chin fat.
• Emsculpt — using electromagnetic energy to build muscle alongside some fat reduction.
• WarmSculpting and other heat-based approaches.

By the mid-2020s, non-invasive fat reduction had become a genuinely multi-technology marketplace, with cryolipolysis still holding the largest single share. If you are weighing up the options, our comparison of the most popular fat reduction treatments and the question of whether cryolipolysis is just a fad are both worth a read.

What has changed — and what hasn’t

The fundamental principle Manstein and Anderson described in 2007 has not changed: controlled cooling triggers apoptosis in fat cells while leaving skin, nerves and muscle largely intact. What has evolved is the engineering around that principle.

Modern applicators are more comfortable, cooling profiles are more precise, and built-in safety systems are more sophisticated than the earliest models. The 2021 launch of CoolSculpting Elite, with its dual applicators, reflected years of refinement aimed at improving both comfort and consistency, and newer devices have reduced certain rare complications compared with the first-generation hardware.

One word of caution that the history makes clear: not all “fat freezing” devices are equal. The original technology carries an extensive clinical evidence base and FDA clearance; cheaper imitators found in some salons may not reach the precise temperature ranges or include the automatic safety cut-offs that make the procedure dependable. Device quality and a well-trained practitioner matter a great deal.

A treatment built on observation, not hype

Perhaps the most reassuring thing about cryolipolysis is how un-glamorous its origins are. There was no marketing campaign behind a child’s frozen cheeks in 1970, or a horse rider’s chilly thighs. These were simply careful clinical observations, repeated over decades, that a couple of Harvard researchers finally connected and tested.

That grounding is also a useful reminder of what the treatment is — and isn’t. Cryolipolysis is body contouring, not weight loss. It can reduce localised, pinchable pockets of fat that resist diet and exercise, but it will not meaningfully change the number on the scales, and it is not a treatment for obesity. Results develop gradually over a few months, and most people are best suited to it when they are already at or near a stable, healthy weight.

Curious to see where the story leads next?

From a popsicle to a Harvard laboratory to a global market worth well over a billion pounds, cryolipolysis has come a remarkably long way. If that history has piqued your interest, the best next step is a proper conversation about whether the treatment suits your goals, your body and your expectations — because no honest history ends with a guarantee.

To find out more, explore our fat freezing treatment page or book a consultation. We will talk you through the science, set realistic expectations, and help you decide whether this century-in-the-making treatment is the right fit for you.