BBC reports on how the credit crunch and rising food and fuel costs are having an impact the costs for snack firms.
Mars has become the latest snack firm to admit the credit crunch is eating into its business.
The Snickers bar and M&Ms maker said it would be raising the wholesale price of its goods to offset rising raw material, packaging and energy costs.
The news came days after fellow US firm Hershey raised its product prices.
Mars also said it would be cutting the size of some of its goods. In the UK, a number of firms have shrunk snack sizes to stave off price rises.
So we can expect our chocolate bars to get smaller.