If you live on cheeseburgers and pizza (CHANGE YOUR DIET), you are most-likely missing some of the essential micronutrients known as vitamins and minerals. If you eat vegetables and fruits throughout the day, you are probably obtaining all the vitamins and minerals you need. If you fall somewhere inbetween, you may wish to consider a vitamin and mineral supplement. If you never eat fruits and vegetables, you may want to supplement daily. Those who get some vitamins and minerals from fruits and vegetables may wish to supplement with one vitamin pill every other day.