What causes lumbar bulging discs?

Very common. Bulging disc does not necessarily mean herniation or compression/impingement of nerve and thus often no pain. It is rather common, more as we get older. Excessive force on the spine colum, often because of excessive wt, trauma etc..Causes the discs to bulge out. Aging weakens the tissues and thus increases risk of bulging and possible herniation. Stay lean/healthy reduces risk. Good luck.

Related Questions

Does bulging discs and 1 ruptured disc in the lumbar sacral area cause difficulty in urination?

Depends. Though extremely rare, a severely bulged disk can cause urinary problems that is almost always associated with numbess in the genitals and buttocks. With these types of symptoms, medical evaluation should be sought immediately. Read more...
Sometimes. Ruptured disk compressing the cauda equina nerves can cause problems with urinary retention (unable to pee) or urinary incontinence (unable to stop peeing). These disks are usually large. The urinary difficulties are usually associated with numbness in the butt and groin. This is a serious problem requiring immediate medical attention. Read more...