According to the Department of Health obesity currently costs the NHS £5 billion every year. 40,000 people die of conditions linked to being overweight or obese.
Latest figures show the number of children who are overweight or obese doubles during primary school.
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Paramedics were called to reports of an unresponsive baby girl on a bus in east London - she later died in hospital.
Government ministers from the UK, France and China attended the event.
Tonight investigates the increasingly sophisticated methods criminals are using to target the elderly and defraud them of their savings.