What are vitimins for. why is it bad if you have low vitimims and why do you need vitimins? its because i might have low vitimims

Vitamins: There are many kinds of vitamins -- but generally, vitamins are substances that your body needs in order to grow, develop, and function optimally. If levels of certain vitamins are low, you can develop deficiency diseases. For instance, low levels of vitamin d can result in rickets; low levels of vitamin c can result in scurvy. For more detailed info: http://tinyurl.Com/ndpnuek.