Chips, cookies and ice cream... Many kinds of food we like are ultra-processed(超加工的). And you may want to eat them again and again, said a new study in the British Medical Journal.
What are ultra-processed foods (UPFs)? You can't make them by yourself in your own house. They are usually made in factories. And they often have lots of materials you may never know. Such foods have more calories than natural foods.
The scientists studied 36 countries and found that UPF lovers may feel very bad if they stop eating the food. Why do people love UPFs? Such foods can bring dopamine(多巴胺) to people's mind. This helps make them feel happier and want to eat more.
About 14 percent of adults and 12 percent of children are eating UPFs, said the study. They are not good for people's health around the world. Scientists are now calling for more care about the UPFs.
