Exam pressures and family break-up were thought to be the main stress points, the questionnaire by the Association of Teachers and Lecturers found.

BBC: Pupils 'under greater pressure'

The main hormone produced during stress is cortisol, which causes aggression and and mood problems.

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Chief executive of the Teacher Support Network Patrick Nash said stress was "the main emotional state teachers report they feel".

BBC: NEWS | UK | Education | Many teachers 'stressed in class'

She said three recent major reports had identified the high level of staff absenteeism in the NHS, with the main causes being mental health issues -particularly stress - and back problems.

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These hormones include cortisol (which is related to stress), estradiol (the main female sex hormone) and prolactin (which, as its name suggests, triggers her breast tissue to develop the ability to secrete milk).

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Galling as it must be for the islands, their main function for America may be as a way to stress the interests it shares with Australia and New Zealand.

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Ancelotti did stress though that winning the Champions League is not the main aim of Chelsea owner Roman Abramovich.

BBC: Carlo Ancelotti

This stress needs to be addressed before jobs can be created on Main Street USA as housing and construction drive local economies.

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This stress on the need to create a broad progressive movement has two main consequences for the Blairite approach to government.

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But let me stress that this is not a zero-sum game where Wall Street loses and Main Street wins.

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