At what age is adenomyosis most commonly diagnosed?

Adenomyosis is a condition characterized by the presence of endometrial tissue within the muscular wall of the uterus, leading to symptoms such as heavy menstrual bleeding, painful periods, and enlarged uterine size. It is most commonly diagnosed in women who are in their reproductive years, particularly those aged over 40. This age group is often approaching or in perimenopause, which is associated with hormonal changes that may contribute to the development of adenomyosis.

As women age, particularly after 40, the prevalence of adenomyosis increases, likely due to accumulated hormonal influences and changes in uterine tissue. It is also worth noting that the diagnosis typically follows several years of menstrual cycles that may exacerbate the condition, leading to its increased identification in this age demographic. Factors such as childbirth and uterine surgery also play a role, as the condition is often more prevalent in women who have had multiple pregnancies.

Consequently, the age group of over 40 years aligns with the typical presentation and diagnosis of adenomyosis, supporting why this answer is the most accurate in reflecting clinical findings.