If the case of slipped disc is very acute, sharp &shooting pain and associated with sciatica then the patient generally requires lumbosacral support(belt) for a short period of time as long term usage may lead to muscle weakness as well as stiffness.But most of the time its helpful as old age group recovers slowly and do less exercises and cannot tolerate severe pain.
Next Steps
Best is to go to a physiotherapist,he will suggest you better whether to use belt or not depending upon intensity of pain,severity of muscle weakness as well as nerve compression.
Health Tips
Avoid forward bending,prolonged travelling ,weight lifting and stair climbing...Need postural correction i.e. sit tall,...Avoid cold exposure.....GET WELL SOON!