According to the World Cancer Research Fund cutting back on salty foods such as bacon, bread and breakfast cereals may reduce people's risk of developing stomach cancer.
It wants people to eat less salt and for the content of food to be labelled more clearly.
In the UK, the WCRF said one-in-seven stomach cancers would be prevented if people kept to daily guidelines.
Cancer Research UK said this figure could be even higher.
The recommended daily limit is 6g, about a level teaspoonful, but the World Cancer Research Fund said people were eating 8.6g a day.