Associate Professor Dr Jeyakantha Ratnasingam is a leading endocrinologist whose training, experience, and active academic role combine to offer patients high-quality, up-to-date care. He holds an MD from Universiti Kebangsaan Malaysia and a Master in Internal Medicine from Universiti Malaya. He completed his advanced endocrinology training under the Ministry of Health Malaysia, plus fellowships/attachments overseas — including at Princess Alexandra Hospital in Brisbane, New Zealand’s Auckland City Hospital Pituitary Centre, and at Cambridge University’s endocrine clinic at Addenbrooke’s Hospital in the UK. He is Head of the Endocrinology unit at University Malaya Medical Centre, and his clinical interests include management of all major hormonal disorders: type 1 & 2 diabetes, thyroid, pituitary, adrenal, gonadal disorders, osteoporosis, and neuro-endocrinology (especially pituitary disorders). He also plays an active role in clinical trials and research in endocrinology, diabetes, and metabolic bone disease, and holds leadership roles in national professional societies (e.g. Malaysian Endocrine & Metabolic Society; Diabetes Malaysia; Malaysian Osteoporosis Society).