Clams are a very nutritious whole food with a host of health benefits. They are a lean source of protein; are rich in minerals, vitamins, and Omega- 3 fatty acids; they promote sexual health; and have been found to possess cancer-preventing properties. In a 3-ounce serving, steamed clams provide 24 milligrams of iron, or 133% of the daily value. Iron is a part of proteins and enzymes found throughout your body, including hemoglobin and myoglobin, both of which help carry oxygen in the blood. Iron is an important component of muscles, and it helps regulate the growth of cells.