How can I increase my HB level from 6.8 mg/dl?

One way to increase hemoglobin content in the blood is to increase your iron intake. You can do this by eating foods rich in iron. These include spinach, liver and organ meat, cabbage, green beans, and tofu. Folate is a vitamin that your body uses to create haem and is present in spinach, rice, and meat. This way you can increase your hemoglobin levels quickly without medications.