Sacralization of l5. Problem be solved?

Hi, I am suffering from leg pain. My whole left leg hurts badly, when walking, standing for long. This caused me after I joined the gym for weight loss. And when I consulted a neurologist, he asked me to take an MRI. Then I found some nerve problems in my neck n leg. I would like to know more about it. How to treat it permanently. Can I go to the gym for weight loss? If I reduce my weight will this problem be solved? My report : Levels C2-C3 0.91 C3-C4 0.96 Screening of the dorsal spine: No significant abnormality noted. Screening of lumbar spine: Transitional L5 vertebra (Sacralization). No significant abnormality noted in the lumbar spine. Impression: Straightening of the cervical spine with loss of lordosis. Focal syrinx of cervical cord at C6 level. Mild Posterocentral Disc protrusion at C5-C6 level causing indentation over ventral thecal sac.