•Calcium, which is one of the key minerals most frequently linked to human health is cannot be produced by human body, it must be obtained through food.

•Oxalic acid, citric acid and phytates which are present in fruits and vegetables can bind with calcium and form insoluble salt complexes.

•It will reduce the calcium absorption in the human body.

•Calcium deficiency may cause osteoporosis, hypocalcemia, weak nails, and slower hair growth.