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Prevention of rickets and vitamin D deficiency in infants, children, and adolescents.\nWagner CL, Greer FR; American Academy of Pediatrics Section on Breastfeeding; American Academy of Pediatrics Committee on Nutrition.\nPediatrics. 2008 Nov;122(5):1142-52. Erratum in: Pediatrics. 2009 Jan;123(1):197.\nPMID: 18977996

AUGUSTA, Ga. - Too little vitamin D could be bad for more than your bones; it may also lead to fatter adolescents, researchers say.\n\nA Medical College of Georgia study of more than 650 teens age 14-19 has found that those who reported higher vitamin D intakes had lower overall body fat and lower amounts of the fat in the abdomen, a type of fat known as visceral fat, which has been associated with health risks such as heart disease, stroke, diabetes and hypertension

ScienceDaily (Feb. 10, 2009) - Vitamin D is significantly associated with muscle power and force in adolescent girls, according to a new study. Although vitamin D is naturally produced in the body through exposure to direct sunlight, vitamin D deficiency has become widely common in the United States. Vitamin D deficiency has been shown to have a significant negative impact on muscle and bone health, and can lead to conditions including osteoporosis and rickets.

March 11, 2009 -- Low vitamin D levels greatly increase a teenager's risk of diabetes and heart disease, Johns Hopkins researchers find. It is becoming clear that adults who get too little vitamin D are at higher risk for diabetes and heart disease. Now, it appears vitamin D levels also affect these risks earlier in life, say Johns Hopkins researchers Jared P. Reis, PhD, and colleagues.

ScienceDaily (May 12, 2009) - A research project at the University of Gothenburg has been testing large groups of 13-year-olds in Sweden since the early 1960s using the same intelligence test. The tests have taken place at approximately five year intervals and consist of an inductive-logic test, a verbal test and a spatial test. Crucial factor The most recent study, which was reported in the new issue of Journal of Swedish Educational Research, shows that today's teenagers are achieving demonstrably better results in the logic test than was the case fifty years ago. This is positive as logic is a crucial factor for achievement in mathematics. "With regard to pupils chances of assimilating maths teaching, there is thus nothing to indicate that the preconditions have deteriorated in recent decades," says Professor Allan Svensson at the Department of Education.