Bone mineral density (BMD) is shown to decrease in women in their post menopausal stages. Further studies conducted have shown BMD ratios differ in various ethnic groups in postmenopause.
Studies have shown BMD starts to decrease in women during perimenopause. A research study was conducted in the Department of Medicine in the Massachusetts Hospital in Boston, to see if ethnicity played a roll in post menopausal BMD in women. Research was conducted on 3 ethnic groups in the U.S. These were Caucasian, Chinese, Japanese and African-American.