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The problem: Many beginning runners underestimate the importance of nutrition, for both their running performance and their overall health.

问题：许多跑步新人低估了营养对他们跑步成绩和整体健康水平的重要性。

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As they eat rubbish food for a long time, it is easy to lose nutrition and get the problem of overweight.

当他们吃了很长一段时间的垃圾食品后，很容易营养失衡，出现超重的问题。

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"BMI isn't the problem, " said Walter Willett, chair of the department of nutrition at the Harvard School of Public Health.

WSJ: A Good Way to Measure Obesity? Fat Chance

The RCN has launched its Nutrition Now campaign to raise awareness of the problem by calling on nurses to fill in incident forms when they are unable to help feed patients.

BBC: NEWS | Health | Lack of nurses 'nutrition fear'

AMs heard evidence that the standard of hospital catering and patient nutrition in many cases was poor and that the problem was widespread.

BBC: Public Accounts Committee