Fat freezing is billed as a treatment that can eliminate people’s fat cells in predominately troublesome areas of the body to create a slim physique. Also known as cryolipolysis, this noninvasive procedure is attracting a growing number of people interested in reshaping areas of their bodies without the need for going under the knife.
Liposuction has traditionally been one of the more popular procedures for removing excess fat and helping to mold the body. WebMD says liposuction removes fat using suction. A small, thick, blunt-tipped cannula is inserted through tiny cuts in the skin. Fat is then vacuumed out through these tubes as the doctor moves the tubes around to target certain fat deposits. Although newer techniques, including using various anesthetics, have been introduced to make liposuction more comfortable, swelling, bruising and pain as well as fluid drainage from the incision sites may result.
Fat freezing, which is primarily known by the name CoolSculpting®, is  a Food and Drug Administration-cleared, nonsurgical procedure that helps to eliminate fat. The company states that it uses controlled cooling to eliminate fat that resists the effort of diet and exercise. 
The concept of fat freezing actually started with a popular dessert. Scientists at Harvard University discovered that some children who ate popsicles ended up with dimples in their cheeks. Doctors Dieter Manstein and R. Rox Anderson later concluded that the popsicles froze and eliminated small pockets of fat cells without damaging skin or surrounding tissue. This was the science behind cryolipolysis. 
The doctors developed a system to deliver precisely controlled cooling to target fat cells under the skin. The crystalized cells die and are naturally eliminated from the body through time.
Dermatologists and medical spas are increasingly offering fat-freezing services to their clients. Many people are attracted to CoolSculpting because it doesn’t require surgery. 
According to Zeltiq Aesthetics, the original parent company of the CoolSculpting technology, the FDA found the procedures offered “clinically meaningful” changes in 60 patients after treatment for the reduction of love handles. Six months after treatment, ultrasound measurements found an average 19 percent reduction of the targeted fat layer. 
During a roughly one-hour treatment session, a vacuum device pulls on fat bulges and exposes the fat to cold. It may take several treatments to achieve desired results, and decreases in fat do not immediately occur, but can be seen two to four months later, on average. Treatments are not covered by insurance and can range from $750 to $2,000 per area.
Currently, there are no safety concerns, but the technology is still very new and there are no long-term study results. Side effects can include temporary redness, swelling, blanching, bruising, firmness, tingling, stinging, tenderness, cramping, aching, itching, or skin sensitivity, offers CoolSculpting. According to the American Society for Dermatologic Surgery, CoolSculpting accounted for almost half of all body-sculpting treatments in 2016.
Freezing fat cells is another way that people may be able to rid themselves of stubborn, unwanted fat.