high A.S.T, high A.L.T and high cholesterol

I am 28 years old Australian. I seldom exercise and I have no dietary restriction. I have been doing a series of blood test over the past 6 months and they all showed similar results ie my last results in Australia measurement (ie litres, millimol) indicates:

A.L.T          114 U/L    (ranges between 5-40)
A.S.T          49 U/L     (ranges between 5-40)
Choesterol     6.1 mmol/L (ranges between 3 - 5.5)
Triglyceride   4.25 mmol/L (ranges between 0.6 - 2.00)

I am particularly concern about the triglyceride value. Just to provide you with some of my background. I don't take drugs. I am not on any medication. I don't drink (alcohol). I don't have any symptoms of viral infection. Lastly, my hepatitis (A&B) test are negative.

Can you please
1) provide some advice/insights to these values and how to reduce them.
2) is it possible that my cholesterol level and the A.L.T are related