Growth hormone (GH) is a peptide hormone secreted by the pituitary gland that stimulates growth, cell reproduction and regeneration. As the name suggests, low growth hormone, also known as growth hormone deficiency, refers to below normal levels of this important hormone. Causes Low GH levels can be due to:
- Damage or injury to the pituitary gland
- Congenital conditions present at birth
- Inflammation
- Tumors
- Radiation therapy
- Slowed growth
- Delayed puberty
- Increased body fat
- Muscle weakness
- Decreased muscle mass and strength
- Weight gain, particularly increased belly fat
- Low energy levels and fatigue
- Poor skin elasticity
- Hair loss
- Depression and emotional changes
- IGF-1 and growth hormone stimulation tests
- MRI scans to look at the pituitary gland
- Daily injections of synthetic growth hormone (somatropin) are the standard treatment
- Doses are tailored to the individual
- Treatment is lifelong, unless the condition is due to a tumor which has been successfully removed