Page last updated at 16:26 GMT, Monday, 5 October 2009 17:26 UK

Made Up Phenomenon: Does sudoku make you fat?

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Recent headlines claimed that doing puzzles such as sudoku and crosswords can make you fat - but Radio 5 live's Donal MacIntyre programme smelled a rat.

Donal MacIntyre and Hannah Barnes asked the Canadian academic who led the reported research, Dr Kathleen Martin Ginis, whether the unexpected link between brain teasers and weight was genuine, or was it just another Made Up Phenomenon?

Donal MacIntyre was broadcast on BBC Radio 5 live on Sunday 4 October 2009 at 1930 BST. Or download the free podcast.

If you have spotted a possible Made Up Phenomenon which you would like the team to investigate, email donal@bbc.co.uk.

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