Body bank.

Cosmetic surgeons are increasingly fielding requests for “fat banking,” with patients planning for the future with a literal pound of flesh.

“Fat banking is the process of removing a patient’s own fat, typically through liposuction, and then freezing and storing it for potential use in future cosmetic procedures,” Dr. Claudia Kim, board-certified cosmetic surgeon and Chief Medical Officer of New Look New Life, told The Post.

According to Kim, fat banking appeals to patients who want to avoid additional harvesting when planning ahead for touch-ups or other cosmetic surgeries — but, she warns, it’s not without risks.

Where does banked fat come from — and where does it go?

Typically, patients build up their banks with fat harvested from the abdomen, flanks, thighs or hips.

“These are the same donor areas we use in traditional fat transfer procedures because they tend to provide sufficient volume and are relatively accessible,” said Kim.

That stored fat can then be applied to any area where volume loss is common or contouring is desired, like the cheeks, temples and under-eye areas — or the breasts and butt.

“[Patients are] told that by harvesting fat once, they can avoid additional liposuction procedures in the future and have a ready supply of their own tissue available whenever they want to enhance or maintain results,” Kim explained.

Many are drawn to the idea of using their own fat rather than synthetic fillers or implants to achieve their cosmetic goals, she added: “It feels more natural to many patients, and that’s a valid consideration.”

What are the risks of fat banking?

First of all, any fat transfer — which involves harvesting a patient’s own fat, purifying it, and reinjecting it into targeted areas to add volume — has inherent risks.

“These can include fat necrosis — the death of fat cells that can cause hard lumps, oil cysts, calcifications, contour irregularities, infection, or the need for revision procedures,” Kim said.

But the cryopreservation process required to store banked fat introduces more variables.

“Fat is living tissue, and when it’s frozen and stored, its viability can be affected by multiple factors, including how it’s processed, how it’s stored, and how long it remains frozen,” Kim explained.

These factors can have a direct bearing on cosmetic results.

“Patients may not get the volume retention they expected, or they may need additional treatments to achieve their desired outcome,” she emphasized, noting that in extreme cases, frozen fat can lead to uneven results or an insufficient amount of viable material.

Blundered blubber, if you will.

But at least traditional fat transfer — while not perfect — has “a much longer clinical track record and a stronger evidence base.”

“We have a much clearer understanding of how that tissue is likely to behave,” she said. “Fat banking is still developing, and that distinction matters when it comes to setting realistic expectations.”

What about cadaver fat?

In addition to banking their own fat, many cosmetic enthusiasts are turning to injectable fillers made from the donated fat of the dead to lift, plump, and sculpt their bodies.

This donated cadaver fat, also known as donor-derived fat ,only became widely available in the US last year. As with fat banking, Kim applies careful consideration to donated cadaver fat.

“Donor-derived fat products are fundamentally different from using your own fat,” she said. “These products are processed and do not function as living fat cells in the same way that your own tissue does.”

Before it’s injected, the donor fat undergoes a multi-step cleansing, sterilization, and purification process that removes cellular debris, DNA, and other components that could trigger an adverse immune response.

Kim explains that while donor fat can provide structure and/or temporary volume, it does not offer the same level of long-term integration as fat taken from a patient’s own body.

“They should be used thoughtfully and on a case-by-case basis, rather than as a direct substitute for a patient’s own fat,” she explained.

“I use donor-derived fat selectively, particularly when a patient does not have enough of their own fat available or when a small amount of volume is needed, and we want to avoid a separate harvesting procedure.”

The verdict? Practice caution

Kim underscored that while fat banking certainly has appeal, it’s an evolving practice with limited data to support its efficacy.

“Fat banking may become more established as research continues, but at this point, patients should approach it with a clear understanding that it is still an emerging area,” she said, emphasizing that in the realm of aesthetics, newer is not always better.

“The goal should always be to choose the approach that offers the most predictable and well-supported outcome.”