Is it possible to gain height after the age of 20?

I believe I have not reached my maximum potential height because I smoked a lot for many years as a teenager. Now I quit... i would like to be taller...

Possible, yes. Likely? No. Once the epiphyseal plates have fused (which usually happens at the end of puberty) no more growth is possible. It is possible that they have not quite fused in your bones yet, in which case you MIGHT be able to grow a small amount. Check with your doctor, he may be willing to x-ray and find out--and possibly prescribe growth hormone. But it's a long shot, and I wouldn't get your hopes up much.

I don't think so unless it is hereditary.

Stacked heels, stilts, tall hat鈥ny number of ways!

No but you can buy elevator shoes. They appear to be regular shoes but can add 3" to your height.

Hi
The human normally does not stop growing until 21 years old

No, you have no control over your ultimate height anyway, it was determined at the moment you were conceived. growth ceases at age 20 at the latest. by this time all the bony epiphyses have fused and further growth is impossible.

You without doubt grew up after you quit smoking but I'm afraid now growing taller is out of the question.

guys reach adult height at about age 16

Very rare, but you can always put on fat or muscle!

Possible maybe , likely I think no . You have probably reached your maximum height
I do not think the fact that you smoked in early years has had any effect on your height , maybe your lungs though !!
However now that you have stopped smoking your lung power should get back to normal , if not already .
Just accept some of us are smaller is stature , but maximise personality and charm !!

TOO LATE MATE.... you are too mature to get taller im afraid unless you wanna go through surgery... aparently there is a new way of getting taller by surgery. this new tactic only exist in russia at the moment...what they do is stretch your ligaments and put a piss of mettal in the middle of you knee o that in can make you taller for like 5 inches...thats my answer...