In a review of NHS spending over the past five years, published by the King's Fund, Sir Derek Wanless said the financial burden of tackling obesity could cause public affection for the NHS to wane unless money is more effectively spent.
One in three men and 28 per cent of women will be obese by 2010, says the King's Fund.
Sir Derek blames clumsy NHS restructuring coupled with ill-conceived policy changes for an exodus of jaded senior staff.
But a 50 per cent increase in the NHS budget since 2002, equivalent to £43.2 billion, has led to improvements.
Recommendations for more staff made by Sir Derek in his 2002 report have been adopted.
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