Do the people who are destined to become a Norwood 7 start balding early? i mean around what age do they usually start balding?
Yes, I do believe that the advanced balding patterns like a Class 7 pattern does start to show up earlier.
The best step for you if you think that you are in that category, is to get miniaturization studies and bulk measurement studies done on various parts of your scalp. Any early miniaturization or bulk studies will help you follow the changes over the years with good measurements… and best of all, it will tell you what the diagnosis is and how you are doing with any hair loss medication you’re using.