You can try a Heart Healthy diet which helps to stay healthy overall, however, he may not accept it due to his age. A Heart Healthy diet
means a moderate fat diet
to lower the fat content of your foods
and increase ‘good’ fats to benefit your body. Moderate fat diet means = use polyunsaturated (omega 3, corn oil, nuts, etc) fats and monounsaturated (olive oil, canola oil, peanut oil, etc) fats, no saturated fats (high fat snack foods, butter, fat spreads) and no trans fats.