Major depression is a risk factor for low bone mineral density: a meta-analysis

Area of Science:

• Neuroscience
• Endocrinology
• Orthopedics

Background:

• The link between depression and low bone mineral density (BMD) is underrecognized due to inconsistent literature and limited understanding of brain-bone signaling pathways.
• Existing research presents conflicting findings regarding depression as a risk factor for osteoporosis.

Purpose of the Study:

• To quantitatively assess the association between depression and skeletal status, including BMD and bone turnover markers.
• To clarify the role of depression as a risk factor for low BMD and osteoporosis.

Main Methods:

• A meta-analysis was conducted on 23 studies involving 2327 depressed and 21,141 non-depressed individuals.
• The analysis examined the relationship between depression and BMD across different skeletal sites and bone turnover markers.
• Subgroup analyses were performed based on sex, menopausal status, and diagnostic criteria for depression.

Main Results:

• Depressed individuals exhibited significantly lower BMD compared to non-depressed individuals (d = -.23).
• The association was more pronounced in women and premenopausal women.
• Women diagnosed with major depression by psychiatrists showed significantly lower BMD (d = -.36), unlike those diagnosed via self-rating questionnaires (d = -.06).
• Depressed subjects displayed elevated urinary bone resorption markers (d = .52).

Conclusions:

• Depression is confirmed as a significant risk factor for low BMD.
• Premenopausal women with psychiatrically diagnosed major depression are at particularly high risk for depression-associated low BMD.
• Routine BMD measurements and osteoporosis interventions are recommended for high-risk individuals.