Dr. Leilani Fifita

Dr. Leilani Fifita is an endocrinologist at Vaiola Hospital in Nukualofa, Tonga, where she specializes in the diagnosis and management of hormonal and metabolic disorders — a clinical priority of exceptional importance in Tonga. The Kingdom of Tonga has among the world's highest rates of obesity, type 2 diabetes, and associated metabolic conditions, making endocrinology one of the most critical specialties in the country's public health response. Dr. Fifita plays a central role in Tonga's non-communicable disease (NCD) management program, providing comprehensive endocrine care within the national hospital setting. She manages both inpatient and outpatient endocrinology, including diabetic emergencies, complex glucose management, and chronic disease monitoring programs. Her work is closely integrated with the Tonga Ministry of Health's NCD Action Plan, which prioritizes diabetes prevention and management as a national health emergency.

Dr. Fifita earned her MBBS from the Fiji School of Medicine — the regional medical training hub for the Pacific Islands — gaining clinical exposure to the high burden of non-communicable diseases prevalent across Pacific Island populations. Following her medical degree, she completed a Diploma in Internal Medicine, which gave her a strong foundation in systemic disease management including cardiovascular, renal, and metabolic medicine. She subsequently pursued specialized training in diabetes management and endocrinology through the WHO Pacific NCD Programme, a regional training initiative designed to build endocrine disease management capacity in Pacific Island nations. This training incorporated evidence-based protocols for type 2 diabetes management, insulin initiation and titration, diabetic complication screening, and thyroid disorder assessment and treatment.

Dr. Fifita's endocrinology practice is dominated by the NCD burden characteristic of Pacific Island populations. Diabetes management — both type 2 (the predominant form) and type 1 — is her primary focus, encompassing lifestyle counselling, pharmacological management, insulin therapy initiation and optimization, and prevention and management of diabetic complications including retinopathy, nephropathy, and peripheral neuropathy. She works closely with nurses and community health workers on diabetes patient education and self-management programs. Thyroid disorders — including hypothyroidism, hyperthyroidism (Graves' disease), and thyroid nodule assessment — represent another core component of her practice. Obesity and metabolic syndrome management, including dietary intervention, medication, and preparation for bariatric referral when appropriate, is critical given Tonga's population health profile. She also manages gestational diabetes and polycystic ovary syndrome (PCOS) in collaboration with the obstetrics team.

Vaiola Hospital serves all patients in Tonga including expatriates, international workers, and tourists. Endocrinology outpatient consultations are available at the hospital, and international patients managing chronic conditions such as diabetes or thyroid disease during their time in Tonga can arrange consultations through the hospital's outpatient department. For specialist endocrine investigations not available locally — such as nuclear medicine thyroid scans or dynamic endocrine function testing — patients are referred to New Zealand or Australia. The Tonga Ministry of Health and WHO Pacific office work with international health partners to ensure continuity of NCD care for all patients, including foreign nationals. Dr. Fifita consults in English and Tongan.

Dr. Fifita has been recognized by the Tonga Ministry of Health for her contribution to the national NCD response — one of the most pressing public health challenges in the Pacific region. Her collaboration with WHO and regional health agencies on diabetes prevention and management programs reflects international recognition of her clinical and public health work. As one of a small number of endocrinology-trained physicians in Tonga, her sustained dedication to managing a population with exceptionally high metabolic disease burden represents a commitment of professional and community importance. She has participated in Pacific regional NCD summits and endocrinology capacity-building workshops.