Understanding Normal IGF-1 Levels Across Different Age Groups The Insulin-like Growth Factor 1 (IGF-1) plays a crucial role in growth and development throughout human life. Secreted primarily by the liver, IGF-1 levels are influenced by several factors, including age, sex, and nutritional status. As a peptide hormone, IGF-1 is essential for various physiological processes, such as cell growth, development, and metabolism. Understanding the normal levels of IGF-1 is important for both health professionals and individuals who want to maintain optimal health. Much like other hormones, IGF-1 levels fluctuate over time, with distinct patterns observed across different age groups. These fluctuations can influence growth patterns during childhood, affect reproductive health in…