You can't, when disk heal they form or heal with scare tissue. Scar tissue in the disks, does not heal. Enough damage, tears or whatever, the disk can no longer heal itself. OTC drugs can't touch it, strength can help, but only to a point. Injections give me 6 months to a year, then the pain slowly comes came back until i can't stand it, every 3 to 4 years, same cycle from around 1990. Surgery can help some but it is 50/50. Also 50/50, depending on the spot, of even more damage. Eventually, when you are 60 plus, the bones around where L5 is, fuse anyways. That helps many. Physical therapy, diet, weight, are your best friends until, they are no longer effective.