Vitamins and minerals play crucial roles in the body by supporting various biological functions. Vitamins, such as A, C, and E, act as antioxidants, protecting cells from damage and supporting the immune system. B vitamins are essential for energy metabolism, while vitamin D is critical for bone health. Minerals like calcium and potassium are vital for muscle function and maintaining fluid balance. Adequate intake of a variety of these nutrients is essential for optimal health, growth, and development, highlighting the importance of a balanced diet.