How do I increase the haemoglobin level from 9.1 to 13?
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.
No it is not harmful.The doctor will advise you blood donation after testing your blood. If you do not have any blood related disorders such as hemophillia you can donate blood to your loved ones in case of emergency.
There could be two reasons either you smoke a lot or you live in high altitude. If both the mentioned conditions are not aplicable then consult a doctor to know the exact cause.
5.5 is very low. One must take iron supplements if your hemoglobin levels are 5.5. However, consider investigating why your levels are low with a blood test.
For young males it is 14-18 g/dL or 8.7-11.2 mmol/L (SI units)