my son likes Licking footwear and also sometimes try to eat mud.. during his 1yr term he has most of the time refused to have Vitamin D drops, can the above tendency because of any Vitamin deficiency

A. hello yes this can be due to the deficiency and it would be better to check with your doctor and give me advise you with some supplement which can be off help and also try to give your child calcium and vitamin rich food in the diet which is better