Onions are a great source of flavanoids and phytochemicals, both of which are helpful in staying healthy and reducing risk of cancer.

The active compounds in onions which are beneficial to health are thought to be most concentrated in its outer layers, so don't peel off too many layers before you start chopping!

If you pop your onion in the fridge 30 minutes before chopping it you should find it doesn't cause so many tears.