Vitamins and minerals play crucial roles in bodily functions by facilitating various biochemical processes. They support immune function, energy production, and cell repair, ensuring overall health and vitality. For instance, vitamin C is important for collagen synthesis, while calcium is essential for bone strength. Deficiencies in these nutrients can lead to significant health issues, including weakened immunity and fatigue. A balanced diet rich in fruits, vegetables, and whole grains typically provides essential vitamins and minerals for optimal performance and health.