Vitamins are compounds that the body needs in small quantities to function correctly, playing crucial roles in body functions like immunity, energy production, and bone health. They are divided into two categories; water-soluble (B and C) and fat-soluble (A, D, E, and K vitamins) ones. A vitamin deficiency or excess can impact your health significantly, causing several diseases such as scurvy, rickets, or night blindness. Maintaining a balanced diet is essential for getting adequate vitamins, but sometimes, supplements may be needed. Regular blood tests can assist in monitoring vitamin levels, ensuring they are within the optimal range to contribute to a healthy life.