By and large, deli meat - which includes things like turkey breast, ham, roast beef, and chicken breast - is a cut of meat that is seasoned, cooked, and sliced thinly. Processed meats like salami, pepperoni, and bologna are something else entirely. That being said, even whole turkey breast deli meat can have high sodium levels, preservatives, and other undesirable ingredients. A general rule is that it's likely that freshly sliced turkey breast from the deli counter is better for you.