Most kids get enough vitamin D from April through October by playing outside. Learn when and how to supplement your child’s vitamin D intake.

CHOP researchers analyzed discrepancies in children’s bone density across the skeleton, teasing out genetic clues that may help prevent osteoporosis later in life.

A genetic tendency for later puberty causes lower bone mineral density. This effect may raise the risk of osteoporosis and fractures later in life.

CHOP researchers show that rare genetic changes strongly increase a child’s bone strength, but only in girls. Bone formation in childhood has lifelong effects.