Heavy bags under the eyes are caused by sagging skin of the lower eyelids and displacement of fat in the orbital septum. 1. Eyelid skin laxity: Eye bags refer to the sagging of the lower eyelid skin, which accumulates into bags. Heavy and obvious bags under the eyes are mainly due to ageing, physical decline, skin laxity, bags under the eyes will slowly aggravate, which is a very common physiological change. 2. Orbital fat displacement: heavy bags under the eyes are mainly caused by the accumulation of eyelid fat and sagging skin. In addition, people who live an irregular life, often stay up late, and do not get enough sleep can also lead to the aggravation of under-eye bags, which is due to the precipitation of metabolites. Severe bags under the eyes can affect a person’s aesthetics, not only because of genetics, but also because of lack of sleep or reduced body functions. If the bags under the eyes are more serious because of age or because of obesity, you can do surgery to remove the excess fat and skin. If the bags are caused by irregular sleep, staying up late, or not getting enough sleep, you can choose to rest, hot compresses, massages, and eye treatments to reduce them.