Norwood Class 4 at Age 20

Hello,
Well i am a 20 yr old guy. I started losing my hair since i was 16. By now i am a Class 4 patient with receded hairline from the front and at the top of the head. Many people have told me that hair transplant is not safe for a 20 yr old male. Is it true? ANd does it have any side effects. Kindly let me know on that.
Regards

At the young age of 20, you are experiencing accelerated hair loss. Your final pattern may be reflected in your family, so probe the entire history of hair loss amongst the men from both your mother’s and father’s sides. Having a hair transplant at this early age may lead to further hair loss, called shock loss, from the trauma of surgery itself. Thus, the net benefit of hair transplantion may outweight the hair loss experienced from shock loss and most (not all) 20 year olds are asked to wait for more time to pass. We can not determine the true pattern of your hair loss until you’re later in age. Hopefully, you have been using Propecia since the beginning of the balding process and this finding reflects a failure of the drug. If not, it is prudent to go on Propecia for now and wait for a response (in about a year). The drug can stabilize or reverse the hair loss in someone of your age. If you bond with a doctor and have been on the Propecia for a year or so, then you can discuss a hair transplant. Going forward along the surgery route requires that you develop a Master Plan for your future hair loss management taking your worst case scenario and balancing it with the worst case ‘donor’ hair availability (that is what is meant as a Master Plan for your hair loss).