[Osteoporosis and major depression: open debate on a bidirectional relationship]

Area of Science:

• Endocrinology
• Psychiatry
• Gerontology

Background:

• Osteoporosis and depression are prevalent chronic conditions impacting quality of life.
• Previous research on their comorbidity shows inconsistent results due to varied study designs and diagnostic tools.
• The causal relationship and underlying etiology between these two diseases remain unclear.

Purpose of the Study:

• To review the plausible causative relationship and underlying mechanisms linking osteoporosis and depression.
• To describe the potential impact of osteoporosis on mood and depression on bone health.
• To highlight the roles of specific physiological systems and external factors in this comorbidity.

Main Methods:

• Literature review of existing studies on osteoporosis and depression.
• Analysis of proposed etiological links and biological pathways.
• Discussion of the influence of physiological axes, hormones, cytokines, medications, and lifestyle factors.

Main Results:

• Limited evidence suggests osteoporosis may worsen depressive symptoms.
• Substantial research indicates depression negatively affects bone density and increases fracture risk.
• Key biological pathways implicated include the hypothalamic-pituitary-adrenocortical axis, sympathoadrenal system, parathyroid hormone, and cytokines.

Conclusions:

• The bidirectional relationship between osteoporosis and depression warrants further investigation.
• Understanding shared mechanisms involving stress response systems, hormones, and inflammation is crucial.
• Antidepressant treatments and lifestyle modifications may play a role in managing this comorbidity.