A year after going to a chiropractor for herniated disks I find myself very noticeably taller. Did the adjustments do that & is this growth permanent?

Chiropractic adjust. Regular chiropractic adjustments can improve posture and help correct mild curvature of spine- this can lead to the ability to comfortably stand taller thus creating feeling of being taller. Herniated discs typically lead to hunched posture.