I'm not on any meds, and I'm happy with what I currently have. I've noticed that my hairline changed compared to what it was when I was 18. I think my current hairline has been around since I was ~20 with few changes. My hair is definitely thick everywhere except at the corners of my forehead where it's slightly less thick.
What differentiates a maturing hairline from MPB? Thinning hair combined with a receding hairline? I'm new to all this, so forgive me if these are simple questions.