Most suggest a heart healthy Med diet which is not overly extreme, and as suggested a reduction in red meat. Arachidonic acid is present in red meat and dairy fat. Cooking method is often discussed: burning of any meat and oils is regarded as being negative, so cook any meat, chicken or fish more gently, steam it, or use in curry or stew.
Often suggested supplements are: Lycopene (cooked tomatoe), Selenium, Vitamin E gamma and delta, Vitamin D3 (sun), fish oil (salmon etc)