A double chin, medically termed submental fat, is an accumulation of excess fat under the chin and around the neck area, resulting in a noticeable sagging or drooping appearance. It’s often caused by factors like weight gain, genetics, aging, and poor posture. Double chins can affect people of all body types and ages. While excess weight is a common contributing factor. Furthermore, individuals with normal body weight can develop a double chin due to genetic predispositions or loss of skin elasticity with age. 

Factors like poor posture and weak neck muscles can also contribute to the development of a double chin. Thus, causing the skin and muscles in the chin and neck area to lose tone and firmness. Double chins can impact self-esteem and confidence for many individuals, prompting them to seek out various methods to reduce or eliminate excess fat in this area, including lifestyle changes, exercises, cosmetic procedures, and surgical interventions.