Causes of Back Fat
Apart from the back fat causes described above, aging plays an imperative role in forming back fat. When people reach their 30s, growth hormone (GH) level declines progressively, which creates bigger obstacles for human bodies to build new muscles and maintain old muscles. Therefore, back muscles will naturally turn into back fat while aging. In addition, a low level of leptin is another culprit of fat build-up. Leptin is a hormone to help regulate food intake and body mass. Under the effect of leptin, people start to feel full after a meal. Leptin deficiency will lead to uncontrolled food consumption and body fat accumulation. [2]