Good day Dr.Rassman and company. Here is a picture of professional hockey player Ryan Getzlaf back in 2003 when he had gotten drafted to the Anaheim Ducks.
This is him in: 2003, 2010, 2012
How did he lose hair so fast?

According to Google, Ryan Getzlaf is 27 years old now… so he was a teenager in that first photo from 2003 and his juvenile hairline is clearly evident. In young men (under 35 years old) hair loss is not a steady process, as it may come in spurts. Hair loss over an 8-9 year time frame is not fast from a genetic point of view.
