The incidence of both Slipped disc & Sciatica injuries will be greatly reduced When those following a sedentary lifestyle , unused to back exercise or strain , learn to practise a few yogic asanas daily to preserve strength & flexibility of the spinal muscles , disc & ligaments.
Avoiding excessive use of chairs & back rest which weaken back muscles & learning to lift heavy weight from the floor correctly that is from the squatting position with knees bent ,so as to protect the vulnerable lower back from excessive strain & injury will also preserve a healthy back.