Is there any such thing as a salt tooth? We are familiar with a sweet tooth, along with the negative effects of sugar. We are broadly aware of the disadvantages of too much salt, including high blood pressure, which puts pressure on the blood vessels (血管), the heart and the kidneys. It can also lead to water retention (水肿). But we don't tend to police how much salt we eat — at least, not as rigorously as with sugar — or question whether we are just paying attention to our bodies, which require some salt for muscles to work properly, or we are being controlled by a strong urge.
A salt tooth is quite unlike a sweet tooth. It doesn't create an appetite for itself at the hormone level. But salt does make our taste buds (味蕾) get used to it, so that the more you eat, the more you need to get the same salty hit. This is why chefs can get heavy-handed with it.
As Sam Bloom, a nutritional therapist, explains, "What is generally more concerning is the fat that is used together with salt, like salty crisps, fries and fast food. Ready meals are often the worst for hidden salts. Anything that adds flavor that isn't a spice or herb will probably have salt added to it and can make you want to eat more because it tastes good. The salt and fat combination in these foods is what causes problems with cholesterol (胆固醇). The salt that people add to a meal is much less concerning."
Nutritionists' suggestion is convincing: When the desire for salt hits, avoid going straight for salty snack foods such as crisps and instead ensure you are well hydrated. Seek out whole foods, such as olives and leafy greens. These foods will help you alleviate the desire for salt, which may often be due to a desire for nutrient-rich food.
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