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Should our air fare be based on how much we weigh?

6 September 2013 Last updated at 16:27 BST

The rise in obesity means more people struggling to fit into a standard airline seat. So how should the airlines respond?

Keith Wallace looks at the options being considered by the industry - providing larger seats; forcing heavier people to pay for a second seat; or even linking the air fare to the weight of the passenger.

Watch more clips on the Fast Track website.