Human Growth Hormone (HGH): Functions, Medical Uses, and Side Effects

Human Growth Hormone (HGH), or somatropin, is a peptide hormone produced by the anterior pituitary gland. It regulates growth, cell reproduction, and regeneration. Secretion peaks during childhood and adolescence, declining with age.

Key Functions

Growth and Development

• Stimulates growth in children via insulin-like growth factor 1 (IGF-1), crucial for bone and muscle development.
• Promotes long bone lengthening until growth plates fuse.

Metabolism

• Protein synthesis: Enhances tissue building and repair.
• Lipolysis: Breaks down fats, mobilizing fatty acids for energy.

Body Composition

• Increases muscle mass and strength while reducing body fat.

Organ Function and Repair

• Supports internal organ growth (heart, liver, kidneys).
• Accelerates tissue healing after injury.

Immune and Metabolic Regulation

• Modulates immune cell production and activity.
• Influences insulin sensitivity and glucose utilization.

Medical Uses

HGH replacement therapy treats growth hormone deficiency in children and adults, addressing growth disorders and related metabolic issues.

Potential Side Effects

Misuse or excessive dosing can cause fluid retention, joint pain, muscle weakness, insulin resistance, and increased diabetes risk. Medical supervision is essential for safe, effective treatment.