what nutrients does a teenager need
1 A proportion of teenagers (especially girls) have low intakes of some vitamins and minerals (in particular vitamin A, iron, calcium, zinc and iodine).2  Overweight and obesity are prevalent in British adolescents. 3  For example, in 2013 in England, 34% of boys and 39% of girls aged 13-15 years were overweight or obese. A proportion of teenagers (especially girls) have low intakes of some vitamins and minerals (in particular vitamin A, iron, calcium, zinc and iodine). 2  Overweight and obesity are prevalent in British adolescents.