How Many Bones are in a Baby’s Body

Answer: A child has about 300 bones in his body at birth. As the child grows, the bones begin to fuse and lose bone. Bones stop growing around the age of 25. The baby begins to develop 300 bones in the second semester. The innermost part is the bone marrow, a thick jelly that produces blood cells. As your baby grows in you, the bone begins to replace cartilage in a process called ossification. When the baby grows up, usually in 6-18 months, the bones of the skull grow together and completely cover the soft spots.