Yes, canned tuna contains some iron and is a convenient protein source. It also provides omega-3 fatty acids and B vitamins. However, canned products may be high in sodium, so checking the label is important. Tuna intake should also be balanced because of mercury exposure concerns. For people with iron deficiency, canned tuna can be supportive, but a more complete plan should also include red meat, eggs, legumes, leafy greens, and vitamin C-rich foods.