Noncommunicable diseases in Samoa: mortality trends, life expectancy, and health system responses — a secondary data analysis and narrative review

Abstract

Introduction: Samoa, like other Pacific Island countries, faces an escalating crisis of noncommunicable diseases (NCDs). Understanding mortality, life expectancy trends, and health-system responses is essential for evidence-based policy.

Methods: Publicly available secondary data were analyzed, including the WHO Health at a Glance: Samoa (Dec 2024), Samoa Ministry of Health Annual Report (2018–19), World Bank Samoa Gender Landscape (2025), the Global Nutrition Report (2024) country profile, and the Samoa DHS-MICS (2019–20). Descriptive trend analysis was combined with a narrative review of health system reforms. No ethics approval was required.

Findings: In 2021, NCDs accounted for 83% of 1,427 deaths, while communicable/maternal/perinatal/nutritional causes and injuries contributed 11% and 6%, respectively. Life expectancy at birth rose marginally from 69.6 years (2000) to 70.3 years (2019). In 2019, premature NCD mortality (ages 30–70) was 29.2% in women and 33.1% in men, both exceeding regional averages. Obesity prevalence reached 58.4% among women and 43.8% among men, with diabetes affecting 31.0% of women and 26.9% of men. Health-system responses included the 2019 Ministry of Health–National Health Service merger, a US$6.5 million ADB digital health investment, and scale-up of the PEN Fa’a Samoa model under the World Bank Program-for-Results.

Conclusions: Samoa exemplifies the Pacific NCD crisis, characterized by high premature mortality and risk factors. At the same time, system reforms—particularly governance integration, digital health, and culturally tailored primary-care approaches—offer regionally relevant strategies. Continued emphasis on prevention, sustainable financing, and digital monitoring is essential, with lessons for other Pacific Island states.