As odd as it may seem, not all neck fat is extra. It is important, critical in fact, to have a certain amount of neck fat to cushion your skin and neck muscles. Without it, your neck would look unnatural. However, extra neck fat is considered by most to be undesirable. Extra neck fat may be hereditary, and if so is usually evident in early adulthood. It may also be acquired, in which case, it appears progressive with weight gain. There are also those who have extra neck fat in response to aging, even in the absence of weight gain. In these cases, fat can accumulate in the neck due to the redistribution of subcutaneous fat that occurs with aging.
Regardless of its cause, extra neck fat can cause a person to look heavier as well as older. It is surprising how neck lipo can make someone with extra neck fat look significantly younger.