When it comes to the different food groups, the definition of 'processed' varies widely.
And nutritionists and dietitians are quick to point out that some foods, such as milk, need to be processed to make them safe for us to eat.
Furthermore, studies have shown that in the case of fruit and vegetables, the term 'fresh' may not always mean you're getting the most nutritious produce.
The definition of 'processed food', according to the NHS, concerns any food that has been altered from its natural state in some way..
'Yet, according to NHS Choices, "processed food" relates to any food that has been altered from its natural state in some way - either for safety reasons - such as milk, which needs to be pasteurised to remove harmful bacteria or convenience - such as pressing seeds to make oil.
'This means that we may all be eating more processed food than we realise,Freezing, canning, baking, drying and pasteurising products all counts as processing.
The Food Standards Agency defines 'fresh' fruit and vegetables as those that have recently been harvested. 'Many of us think that frozen fruits and vegetables must be the poor relative to fresh, as soon as produce is harvested they start to lose water-soluble vitamins B9-folate and vitamin C.
'The longer it takes for them to reach our kitchen table, the more chance vitamins will be lost, as they are nutrients that are easily damaged by sunlight, heat and storage,'
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