IN PICTURES: Salty Sixteen: popular foods that can have a surprisingly high sodium content

Bread, cheese, spinach and celery have all been listed among 16 popular foods with shocking levels of salt.

Depending on the brand and flavour combination, supposedly healthy breakfast cereals can be quite high in salt as well as sugar.
Depending on the brand and flavour combination, supposedly healthy breakfast cereals can be quite high in salt as well as sugar.

Experts from health and fitness site have researched foods that contain high amounts of sodium and highlighted some of the more surprising examples.

Butter doesnt require it to make a great spread, but many varieties will still be salted to add unnecessary extra flavour.
An apparently healthy supermarket product described as a reduced salt alternative wont always have a low sodium content it will simply contain less than the normal version.
How can companies keep salad dressings low in calories, fat and sugar content but still packing a punch in terms of flavour? Lots of salt.
Grains used to make bread products are naturally low in sodium, but salt will often be added to dough to help it rise and have a longer shelf life or improve the flavour and texture.
The water that fills cans of vegetables is often packed full of salt to help preserve the contents for longer, but this can be absorbed by the ingredients inside.
Fresh olives are typically quite bitter, so plenty of salt is routinely used to make them a palatable delicacy in restaurants and retailers alike
Combining potentially salty cheese, cured meats and preserved vegetables on a potentially salt-filled bread base could be a recipe for a heart attack.
Salt is vital to producing cheese by controlling moisture levels and microbial growth, but halloumi, blue cheese and even classic British cheddar can all contain too much sodium, according to the NHS.
Re-energising sports drinks are designed for athletes working at peak performance levels to replace their bodies salt and other nutrients, but drinking these day to day could be damaging your body.
Celery is often used in stocks and stews for its high salt content that contributes to flavour, but the health conscious should be careful.
Sunday dinners covered in gravy made from high salt stock cubes rather than meat juices could be damaging your internal health.
To cure and flavour processed and preserved meats such as cooked, refrigerated and sandwich-bound ham, salt is used in copious quantities.
Even completely organic, preservative-free spinach thats generally considered good for you can contain a lot of salt per mouthful.
Pre-packaged doughnuts can already seem unhealthy, but they can rely on sodium as a preservative and use salt during the baking process too.
Sometimes stacks of salt can appear in the most unexpected ingredients artichokes can contain several times the sodium content of some fish.