Suggest Treatment And Diet For Hypothyroidism

hi doc, i am pooja from chandigarh, i have thyroid problem for the last 3 yrs. And have two miscarriages within two years after my marriage. The third one is a baby boy born in 2008. Doctor, i am having high levels of TSH i.e. 70+ which is too high and the t3 & t4 levels are in normal range, my skin is so dry that i get itching problem, my weight is also above normal i.e. 70 kgs + while i eat less. My baby was also having high levels of TSH when born but got normal after one & half months. Doctor, I want know that is there a permanent cure of this disease as i have been taking Thyronorme tablets (100 mcg) since i got to know about this. i am also taking regular tests of my thyroid after every 3-4 months. Please advice what i have to eat in the diet and what to avoid. Also advice anything important at this stage. Thankyou.....