The findings were presented by Dr Ngo Quang Hung, chairman of the Hanoi Paediatric Association and director of Hanoi Children's Hospital, at the second Hanoi Paediatrics Conference, held on October 9-10.
Data collected between May 1 and September 20 showed that 220,272 children had registered for health checks across 78 of Hanoi's 126 wards and communes using the hospital's digital health screening system.
Of the 169,352 children examined, 152,970, or 90.3 per cent, were recorded as having at least one health issue.
Dental and oral health problems were the most common, affecting 67.7 per cent of those screened. Eye conditions and refractive errors accounted for 26.1 per cent, while 20 per cent were overweight or obese and 11.6 per cent were undernourished.
Hung said the findings underscored the need to improve eye care, dental hygiene and nutrition, while encouraging healthier diets and exercise to tackle childhood obesity.
However, he cautioned that the data covered only children examined and recorded in the digital system and did not represent all children in Hanoi.
Health patterns also varied by age and location.
Undernutrition was more common among preschool children and those in suburban areas, while vision problems and obesity were more prevalent among urban schoolchildren.
Hung said children's healthcare priorities for 2026-2030 should focus on four main areas: non-communicable diseases, mental health and developmental conditions, infectious diseases, and neonatal screening and care.
He called for the expansion of digital school health screening to all wards and communes, alongside an integrated child health monitoring system linking hospitals, local health stations and schools.
Screening procedures should also be standardised, frontline healthcare workers trained and data regularly cross-checked to improve reliability, he said.
The conference brought together Vietnamese and international experts to discuss advances in paediatric care, including congenital disorders, hearing and vision problems, mental health and infectious diseases.
Dinh Anh Tuan, head of the Ministry of Health's Department of Maternal and Child Health, said child healthcare had improved in recent years, particularly in reducing child mortality and improving nutrition and physical development.
However, childhood stunting remained a concern, especially in mountainous areas and ethnic minority communities.
He urged Hanoi to strengthen comprehensive child healthcare, from early detection and diagnosis to treatment, rehabilitation and long-term follow-up.