Baby in a cot
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Cot death: 'Review of information and evidence needed'

21 May 2013 Last updated at 11:31 BST

Sharing a bed with a newborn increases the risk of sudden infant death syndrome fivefold, research claims.

The risk applies even if parents avoid tobacco, alcohol and drugs - other factors firmly linked to cot deaths.

The BMJ Open research compared nearly 1,500 cot deaths with a control group of more than 4,500 parents.

Prof Bob Carpenter, from the London School of Hygiene & Tropical Medicine, and midwife Helen Howard spoke to BBC Breakfast.