text: A few men continue to grow until their late 20s (but not many!) - at 23 it is possible he might still get an extra 1/2 inch or so of height but more likely he has finished growing upwards.\n\nThere are no non-prescription remedies to grow taller short of breaking your leg bones inserting a gap with rods and waiting for the bone to cover the gap!  Growth hormone treatment will make you taller prior to the end of your height spurt - after this it will just turn you into a short big foot!!\n\n\nAt 5' 9'' your friend is not short and height is an attitude as well as a physical reality.   I am 6' 3'' but have friends who are 5'9'' and look 6 ' to me because they have developed their bodies and carry themselves with confidence.