The emergence of diabetes among Indonesians in their 20s and 30s marks a disquieting shift, recounted Prof. Em Yunir, head of the country’s endocrinology society, at a recent media briefing. Where patients four decades ago were typically 50 to 60 years old, he noted that those in their 20s and 30s are now common, driven by dietary changes and sedentary lifestyles that accelerate microvascular complications. This pattern, observed across many middle-income nations, is propelling a wave of silent damage to eyes and kidneys that often progresses undetected until advanced disease sets in.

Clinicians in Jakarta point to frothy urine as an early warning of protein leakage from damaged kidney vessels, a process that frequently occurs in parallel with retinal damage. Comprehensive eye exams—not simple vision tests—can detect diabetic retinopathy before sight blurs, said Low Jin Rong, a consultant ophthalmologist in Singapore. Meanwhile, health authorities in Lagos are emphasising waist circumference as a more reliable predictor of cardiometabolic risk than weight alone, as abdominal fat releases inflammatory chemicals that fuel insulin resistance and hypertension.

A growing body of modest-scale research backs the effectiveness of simple daily habits. A meta-analysis from Sweden’s Karolinska Institute found that as little as two to five minutes of daily moderate activity can improve blood sugar and insulin metrics, while 20 minutes benefits heart health. That aligns with guidance from Vonda Wright, a US orthopaedic surgeon, who recommends a post-meal walk of up to 45 minutes to help muscles absorb glucose. In West Africa, public health messages increasingly stress that such small, sustained adjustments—along with earlier evening meals—can lower risk.

Indonesia’s health ministry has launched a free nationwide screening programme, CKG, to catch diabetes and other non-communicable diseases early, hoping to forestall expensive late-stage complications. The programme’s uptake and its impact on incidence rates in the world’s fourth most populous country will be an early test of whether widened detection can alter the trajectory of metabolic disease in urbanising populations.