Fortunately I have always had quite a lot of hair. I even remember getting it thinned out when I was a child.
Today my circumference is 9.5 cm, which is about 3.7 inch. I was suffering from hair loss from early to late 2017, so the circumference I have today is the smallest I ever measured. I know that my hair still is pretty thick, but being used to 10.0 or even 10.5 cm (4.1 inch) it seems quite small to me.
I am not 100% sure about the reasons for my hair loss, but I was going through a lot of stress from end 2016 until the end of the year 2017. I am assuming that his caused more hair than usual to fall out. The hair loss stopped when I started taking supplements for my hair.
Since then my circumference has not increased and I am at a constant value of 9.5 cm. I know that it takes a lot of time for the new hairs to grow long enough to increase my circumference and I hope that it will rise again in the next years.
Of course I will keep you updated here on my blog!