Here’s another way to look at it: Our fat calls are basically our microscopic safe-deposit boxes where we store fat, which is the body’s reserve source of fuel and energy. Remember, we have evolved over many thousands of years to survive prolonged periods of starvation. So our bodies are brilliantly programmed to convert any excess calories we eat into fat, and store it in our fat cells. Unlike the safe-deposit boxes you find at the bank, which are made of steel, fat cells are amazingly flexible. They grow bigger and bigger when excess fat is deposited into them, such as after a rich meal. And they shrink down to near-nothingness when we aren’t eating enough calories and so we make ‘withdrawals’ of fat to help feed the body.
CoolSculpting works by taking advantage of the fact that fat cells are more sensitive to cold than the other cells around them. This basic scientific fact was first discovered in 1970 by doctors observing children who sucked on popsicles for hours, and ended up having first soreness, and later dimples, caused by loss of fat cells! Fast forward about 20 years, and Harvard scientists revisited this fact, and realized that they could turn this science into a system for aesthetic sculpting of fatty bulges. The key was to find the ‘sweet spot’ of time and temperature, which would kill some fat cells but not damage surrounding structures such as skin. They called the public company that makes the systems Zeltiq. The proof of the success of this concept and treatment: Zeltiq was bought out by Allergan in 2016 for whopping 2.5 billion! This was the largest sale of a single medical device company in history.