I am 34 years old and suffering with left leg pain and numbness from last one year. mri and ct scan done and found the disc slipped problem in l4 l5, ?

Might need surgery: A herniated disc is one of the most common reasons for needing back surgery, especially if it is causing weakness or numbness in the leg. See your doctor and get a consultation with a spine surgeon (usually an orthopedist or neurosurgeon). You don't want nerve problems to become permanent. A microdiskectomy can sometimes be done as day surgery. Hope you feel better.

Exercise is always : The first line of treatment for any herniation. Surgery is never good as advertised especially in a young person. Most disc herniations improve over time but it can take 1-2 months. I tell my patients to start a gradual walking program. If you can walk 3 miles (about 5 k) you should be ok. Other sue steroids, steroid injections and/or surgery might be needed.