OB told me "Advanced Maternal Age" now starts from age 40 instead of 35

I joked that I, at 35, am a geriatric pregnant lady and my OB laughed and said they now consider 40 the age for "Advanced Maternal Age", not 35.

Obviously the label is arbitrary for what is ultimately a spectrum but I thought it was funny, if any other 30s pregnant people are feeling old because of the dreaded AMA label!