Because the liver has the job of processing and eliminating the dead fat cells resulting from a CoolSculpting treatment, a more unpleasant side effect that a patient may experience are brief bouts of diarrhea. This should only last for the first few weeks post treatment until the excretion process is complete, and although unpleasant is not generally serious. That being said, it is something that should be anticipated and monitored carefully if it does occur. Those affected should make sure they stay well hydrated and eat foods like bananas, avocados and watermelon to replace lost fluids and electrolytes.