They are the bête noire of many nutritionists - mass-produced yet moreish foods like chicken nuggets, packaged snacks, fizzy drinks, ice cream or even sliced brown bread.
So-called ultra-processed foods (UPF) account for 56% of calories consumed across the UK, external, and that figure is higher for children and people who live in poorer areas.
UPFs are defined by how many industrial processes they have been through and the number of ingredients - often unpronounceable - on their packaging. Most are high in fat, sugar or salt; many you’d call fast food.
What unites them is their synthetic look and taste, which has made them a target for some clean-living advocates.
There is a growing body of evidence that these foods aren’t good for us. But experts can’t agree how exactly they affect us or why, and it’s not clear that science is going to give us an answer any time soon.
While recent research shows many pervasive health problems, including cancers, heart disease, obesity and depression are linked to UPFs, there’s no proof, as yet, that they are caused by them.
cont
https://www.bbc.co.uk/news/articles/cpe3pppw1z7o