UPF stands for "ultra-processed food". Ultra-processed foods are industrially formulated edible substances derived from natural food or synthesized from other organic sources. These products often contain additives such as colourings, flavourings, and preservatives, and are typically mass-produced. They are designed to be convenient, cheap, and have a long shelf life, and are often hyper-palatable, meaning that people are likely to want to eat more of them. Examples of UPFs include biscuits, mass-produced buns and breads, sweetened cereals, margarines and spreads, packaged snacks, ice cream, flavoured yogurts, soft drinks, powdered meals, ready-made meals, and instant sauces and stocks. UPFs tend to be energy-dense but low in nutrients, so they are not good for health. The consumption of UPFs has been linked to obesity, cancer, type 2 diabetes, depression, dementia, and tooth decay, among other conditions.