Will having a high BMI of 30 cause missed periods?

Likely. Many overweight women have irregular periods. About 87% of the time it is associated with polycystic ovarian syndrome. You doctor can easily make this diagnosis through your history and physical exam, including an ultrasound of the ovaries and possibly some blood work. The first line treatment is usually cycle control with hormonal manipulation (birth control pills).

Related Questions

Will having a BMI of 18 cause missed periods?

It can. Bmi(body mass index) is an excellent parameter to deteremine obesity or in this case too low. The low body fat percentage at bmi 18 can cause a decrease in estrogen production and consequently "no periods"(amenorrhea). Read more...