Dr Sumaya Shaikh is a family medicine consultant and obesity medicine fellow at St. Vincent’s University Hospital and University College Dublin.
Think of a house in winter. The thermostat is set to 21°C and the central heating works to hold it constant. Open a window and heat escapes, the thermostat senses the drop in temperature and the central heating kicks in again until the temperature is restored. The temperature is defended: whatever pushes it off…
