Hi and welcome to HCM.
Since you take many medicines and some of them are hepatotoxic, this elevation of gGT
is probably caused by these drugs and fatty liver
both. Cancer would have some other symptoms,but you must do some imaging tests to rule this out. US or CT scan
. Till this you should only change dietary and lifestyle habits. Do exercise, avoid alcohol, smoking
, fats, fast food and carbonated drinks. Eat more fruit and vegetables, boiled meat and follow some of hepatoprotective diets. Findings usually improves on such measures. If not, then some medicines can be prescribed, but I suggest to go step by step.
Wish you good health.