Canadian Bone Strength Development Study

Children with Type-I Diabetes: Inclusion Criteria * Females: 10-11 years old. * Males: 11 - 12 years old. * Diagnosed with type-1 diabetes for at least 6 months. * Capacity to give informed consent (patient and parent/guardian). Children with the capacity to give assent will do so in addition to parental consent. Exclusion Criteria * Consuming any medications or have additional illnesses associated with bone health, osteoporosis (including renal disease, celiac disease, hypogonadism, hyperthyroidism) or altered physical growth (precocious puberty). * Have gone through adolescent growth spurt at study entry. Control Group (Typically Developing Children): Inclusion Criteria * Females: 10-11 years old. * Males: 11 - 12 years old. * Capacity to give informed consent (patient and parent/guardian). Children with the capacity to give assent will do so in addition to parental consent. Exclusion Criteria * Have an illness or are taking medications influencing bone health or physical growth. * Evidence of pathologic low trauma or vertebral fracture(s). * Have gone through adolescent growth spurt at study entry.