Lipoma
Another cause of armpit fat is a lipoma, characterized by fatty tissue growth under the epidermis. Usually, lipomas do not cause any health issue, although it is hereditary. Doctors call them benign soft tissue tumors that grow slowly. They move easily when you touch them, and their texture is rubbery. But it could be bothersome. If that is the case, a healthcare provider could surgically remove it as an outpatient procedure.
Lipomas are a common occurrence and start to appear when a person is between the ages of 40 and 60, although younger people can have them, including newborns. Men and women are likely to have lipomas, although women are more prone to them.
Lipomas do not spread to surrounding tissues. They are painless unless they grow in locations where there are more blood vessels. They are either oval or round-shaped and are often about two inches in diameter. However, there are lipomas whose width is more than six inches. They grow anywhere in the body but do not grow on the brain, internal organs, or muscles. They are more prone to develop on the forehead, legs or arms, neck, back, chest, torso, and shoulders.