The proportion of overweight and obese people in Hong Kong increased by more than five per cent over the last seven years, making up nearly half the population, a study has found, as doctors warned against using injectable weight-loss drugs bought online or from parallel importers without a doctor’s prescription. The Hong Kong Association for the Study of Obesity on Thursday revealed the findings of its latest study, which surveyed around 1,000 Hongkongers and found that 19.3 per cent of...