Three evolutionary blueprints for thin air

This research review examines the biological and genetic adaptations of Ethiopian highlanders to extreme high-altitude environments. While Andean populations typically increase their red blood cell count and Tibetans utilize specific gene variants from archaic human ancestors, Ethiopian highlanders exhibit a unique physiological profile featuring moderate hemoglobin levels and high oxygen saturation. The authors highlight a significant imbalance in global research, noting that African populations are frequently underrepresented in genomic databases compared to their South American and Asian counterparts. By identifying candidate genes such as CBARA1 and THRB, the text seeks to clarify how the Amhara and Oromo groups maintain resilience against chronic hypoxia. Ultimately, the source advocates for standardised methodologies and more inclusive genomic studies to fully map the diverse evolutionary strategies humans use to survive in low-oxygen conditions.