Bone renewal, also known as bone remodeling, is a natural process where old bone tissue is replaced with new bone tissue. This process is essential for maintaining bone strength and integrity throughout a person's life. It involves two main types of cells: osteoblasts, which build new bone, and osteoclasts, which break down old bone. The bone renewal process occurs continuously, with about 10% of the skeleton being replaced each year. Factors such as age, diet, and physical activity can influence the rate of bone renewal. Adequate intake of nutrients like calcium and vitamin D is crucial for supporting healthy bone remodeling.