Osteoporosis: Modern Paradigms for Last Century's Bones

Area of Science:

• Bone biology and osteoporosis research.
• Metabolic and endocrine regulation of skeletal health.

Background:

• The skeleton is a dynamic organ undergoing continuous remodeling.
• Aging and menopause shift bone balance towards resorption, reducing bone mineral density and disrupting microarchitecture.
• Traditional osteoporosis paradigms focused on post-menopausal Caucasian women, overlooking diverse population factors.

Purpose of the Study:

• To challenge the classic paradigm of osteoporosis by exploring diverse populations and factors influencing bone health.
• To investigate the heterogeneity in osteoporosis incidence and progression across different ethnicities and geographical locations.
• To highlight the need for genotype-specific research and alternative methodologies for assessing bone health.

Main Methods:

• Review and synthesis of studies examining bone health in various populations (e.g., Black women in Africa, Asian populations).
• Analysis of factors influencing bone mass accretion and metabolism, including hormones, genetics, and lifestyle.
• Comparison of osteoporosis incidence and bone health decline rates across different countries and sexes.
• Exploration of genetic phenotypes and their impact on bone health outcomes.

Main Results:

• Higher body fat did not protect bone health in Black women in Africa.
• Isoflavone interventions showed inconsistent benefits in Asian postmenopausal women, linked to gut microbiota metabolism.
• Significant international differences in bone health decline rates and high osteoporosis incidence in both sexes in Asian countries.
• Identification of significant genetic phenotype differences across populations, challenging previous assumptions.

Conclusions:

• Osteoporosis is a complex condition influenced by diverse genetic and environmental factors, not solely confined to post-menopausal Caucasian women.
• Population-specific genetic variations and lifestyle factors play a crucial role in bone health and disease.
• Future research must focus on genotype-phenotype correlations and diverse populations to develop effective osteoporosis prevention and treatment strategies.
• Alternative methodologies are needed to accurately assess bone architecture across different ethnicities.