My friend gave the report saying her TSH was 5.75.do this need treatment.she has centripetal obesity.if she cures centripetal obesity,can her TSH comes to normal.she has some symptoms like postural hypotension,headache, palpitations,her bp is 110/80 My single question is can her be cured completely by lifestyle modifications??do her TSH level comes to normal??if yes after how many years??if not why???