I always have high liver function test for numerous of years i don't drink had all the test but have liver test 3 monthly my gt gama and alt high?

Let's find why: I'm assuming you're on no meds that could be causing this and that you've been checked for hepatitis b ; c, hemochromatosis, wilson's, antitrypsin deficiency and autoimmune hepatitis. Most of the time, this is nature's way of encouraging you to do more aerobic exercise -- it's as vital to the liver as to the heart though many folks don't know this. Best wishes.