For a minute there I thought you were my sister, our father is very similar although mine is older. I am not a medical student (yet) but have worked in the pharmaceutical industry for four years, specifically cardiovascular medicines. It sounds like by "sort of diabetic" you mean he has metabollic syndrome or syndrome X. This is a precursor for diabetes
Controlling the triglycerides has a few components.
As you have so aptly pointed out his diet needs some modification. Move from white rice (Minute rice variety) to a long-grain or wild rice or even couscous. Bread should be a whole grain (there are even some whole grain whites) and pasta should be of the whole-wheat variety.
The number one issue is the "beer belly." Men and women gain weight differently from eachother. Men build visceral fat (fat around the organs) before ever getting the aforementioned "belly." This is problematic for many reasons but in regards to triglycerides this adipose (fat) tissue affects how the body processes the sugar intake (from the starchy foods he's eating) and creates the triglycerides because of the way the body preferentially uses simple sugars and stores fat. You want to make sure that getting rid of the belly is probably the number one thing that will save him from stroke
or heart attack
, not to mention that he will also get his blood sugars under control.
145 is a good start. Evidence based medicine might also suggest atorvastatin
) because of the recent evidence of reduction of stroke and heart attack in Type-2 diabetics.
In additon to the treadmill I might suggest a swiss ball which he can lean against the wall and do deep knee bends (squats) to work the large quadriceps muscles and increase his metabollic rate (burn more calories) more efficiently. Perhaps a dumbbell set to work his shoulder and back muscles.
The beer (especially in the quantity he's having) is probably doing him more good than ill.
Hope that helps.