Question 1

How much sodium a day is too much?

Accepted Answer

The World Health Organization advises under 2,000 mg of sodium a day, which is 5 g of salt. The NHS uses 6 g of salt, about 2,400 mg of sodium. The US Dietary Guidelines use 2,300 mg. Most people in both countries are above all three.

Question 2

What is the difference between salt and sodium?

Accepted Answer

Salt is sodium chloride, and sodium is about 40 per cent of it by weight. To turn salt into sodium, multiply by 400 and you get milligrams: 6 g of salt is roughly 2,400 mg of sodium. UK labels usually give salt, US labels give sodium, which is why the same food can look twice as salty depending on which country printed the packet.

Question 3

Which everyday foods are the saltiest?

Accepted Answer

Not the obvious ones. Cured meat leads: prosciutto sits near 2,700 mg per 100 g and streaky bacon near 1,760. A packet of instant noodles with its sachet is close to 1,900. Bread is not especially salty per 100 g, but people eat a lot of it, which is why it is one of the largest single sources in the British diet.

Question 4

Does cutting salt actually lower blood pressure?

Accepted Answer

For many people it lowers it somewhat, and the effect is larger in those who already have high blood pressure. It is not a cure and it is not the only factor. If you are managing blood pressure or taking medication for it, that is a conversation for your GP, not a calculator.

Question 5

Why show sodium per 100 calories?

Accepted Answer

Because it tells you something the per-100-gram figure hides. A food can look mild per 100 g and still deliver most of your daily sodium in a normal portion, simply because you eat a lot of it. Sorting by sodium per 100 calories puts the real offenders at the top.

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