CBNNews.com - Some American teenagers and adolescents might be at a higher risk for heart disease.

A new study by Johns Hopkins says it's because of Vitamin "D" deficiency resulting from a poor diet and not getting enough sun.

Of the 3,500 teens studied, those found with the lowest levels of Vitamin D were more than twice as likely to have high blood pressure or high blood sugar levels.

They were also four times more likely to be at risk for heart disease because of a metabolic disorder.

At least 400 international units of Vitamin "D" per day derived from food or supplements is recommended.