Therefore, a doctor should determine whether there is a secondary cause for your husband's triglyceridemia. In any case, he should follow a low-fat diet, obtain additional exercise, reduce alcohol consumption, avoid fried foods and cut out the cigarettes if he is a smoker. Seriously, he can probably take better control of his life by eating, drinking and exercising prudently. Now to the last portion of your question. Many medicines have been developed to lower blood fats, primarily by interfering with the liver's ability to manufacture them.
Some drugs affect only cholesterol, some lower triglycerides, and others reduce both substances.
Whether you and your husband should be taking such medications is a decision best made by your doctor. On one hand, elevated blood fats appear to contribute to premature heart disease. Lowering the levels could certainly be a healthful measure. Medicines could certainly accomplish this goal. On the other hand, you and your husband are in your 80's, and you've weathered the storm.