K2 Slim Keto And since all foods naturally have sodium, it is very rare when we see a person with this mineral in low proportions. There are foods that can have 50 grams of sodium in 100 grams of food, that is, half of what it weighs. Among the foods rich in sodium we can mention: The octopus Seafood and prawns: can store 150 milligrams to 300 milligrams of sodium per 100 grams so they are considered high in sodium. Fish: hake, sardines, sole and anchovies for every 100 grams of weight has 100 milligrams of sodium. Dairy products and their derivatives such as cheese, cottage cheese and yogurt.