dear user as u r not mentioned u r wt..still if u r leg joints are having pain while walking so u should take break while walking or divide u r walking into breaks sit for while and again start it will reduce stress and strain on u r joint .....u have to drink lot of wate ...balance diet ..in that milk..vegetables fruit......and also some protein and calcium supplements ...vit-b12 ....after continuing for 2 months start strengthning of u r leg muscles by tying wt.on ankle extension of knee joint......in supine straight leg raising.....squatting ..excs....each exs.30 times twice or thrice aday..!......it will definately help u.......tc..