I am 19 yrs old and have haemoglobin level 7, tell me how to increase it?

Hemoglobin 7???: Well first get yourself evaluated as to what is the cause of this ; then treat the cause.

See below: Iron supplements with vit c. If your are not a vegan you can increase meat and liver in your diet. Please visit your doc for evaluation, if you are not bleeding (from stomach, bowels, anal fissure or excessive periods).

Find the cause: First you need to find out why you're anemic. If it's due to poor nutrition, then you need to eat foods rich in iron or take supplements. If you're anemic for some other reason, that needs to be investigated. So you need to see your doctor to find out what the cause is.