Can untreated celiac disease cause osteoarthritis and degenerative disk disease?

Possible: Loss of calcium and bone density. With continued loss of fat in the stool, calcium and vitamin d may be lost in excessive amounts. This may result in osteomalacia, a softening of the bone that in children is also known as rickets, and loss of bone density (osteoporosis), a condition that leaves your bones fragile and prone to fracture.

No: No it cannot but it can cause nonspecific muscle aches and pains.