Because andy has high blood pressure and heart disease, he must lower his intake of

The answer is; saturated fats/ Low-Density Lipids cholesterol

This means that Andy needs to avoid animal fats and prefer plant oils (high is High-Density Lipids). Saturated oils will exacerbate his condition since these fats settle in the walls of blood vessels causing plaque and arteriosclerosis. This reduced the lime of the vessels causing increased blood pressure.