My Hair Is Turning Wavy

Dear Dr. Rassman,

This is not a hair loss question! I am a 40 year old bi-racial (white + Korean or AmerAsian) female. I am also adopted and do not have biological-medical history. In the past year, my very straight hair has turned quite wavy. It is still thick and healthy, but changing! I have always had straight hair. I have not reached menopause yet, so I don’t know if this change can be attributed to hormones? I haven’t changed my diet, nor am I taking any medications (other than multi-vitamins). I cannot seem to find any substantial information concerning the potential “cause” of this change. Do you know why my hair is changing? Is this common to aging? I would appreciate any insight you can generously offer. Thank you!

Hair changes its character and thickness with age. Usually, it gets finer and will become wavy if it was straight when it was thicker.