Bone density was found to be impaired among lage babies and infants of diabetic mothers as found in small group studies. The assumption is that large weight decreases fetal movements and causes decreased bone mineralization.The aim of the study is to compare 2 study groups - of large infants and infants of diabetic mothers to each other and to controls.

Inclusion Criteria:

• Term infants of birth weight 4 kg and above, and
• Infants of diabetic mothers.

Exclusion Criteria:

• Preterms,
• Major congenital malformations,
• Sick babies.

Healthy term infants of birth weight 4 kg and above and infants of diabetic mothers