Is Salt safe in food and drink?

High consumption of salt, particularly from salt-preserved foods, is strongly linked to an increased risk of stomach cancer, as it can damage the stomach lining and increase susceptibility to carcinogens, especially in the presence of Helicobacter pylori infection.

Why here

Direct ingestion of salt and salt-preserved foods causes damage to the gastric mucosa, creating an environment conducive to cancer development.

What would have to be true

Regular consumption of high-salt and salt-preserved foods, with some studies showing increased risk for those who 'always add salt to food' at the table.

Excessive salt intake is a well-established cause of raised blood pressure, which is a major risk factor for cardiovascular diseases, including heart disease and stroke.

Why here

Ingestion of high amounts of sodium directly impacts fluid balance and blood volume, leading to increased blood pressure.

What would have to be true

Adults consuming more than 2,000-2,300 mg of sodium (equivalent to 5-5.75 g of salt) per day, with the global average intake estimated at 4,278-4,310 mg per day (10.7-11 g of salt).

High salt intake can negatively affect kidney health by increasing blood pressure and straining the kidneys, which can lead to reduced kidney function, chronic kidney disease, and kidney stones.

Why here

Ingested sodium is processed by the kidneys, and excessive amounts alter sodium balance, impairing kidney function and increasing urinary protein and calcium excretion.

What would have to be true

Adults consuming more than 2,000-2,300 mg of sodium per day; individuals with chronic kidney disease are often advised to limit intake to less than 1,500 mg per day.

Excessive salt intake is associated with increased urinary calcium excretion, which may contribute to bone loss and potentially increase the risk of osteoporosis, particularly in postmenopausal women; however, large-scale studies have shown conflicting results regarding its overall impact on bone mineral density and fracture risk within current dietary guidelines.

Why here

Ingested sodium affects calcium metabolism, leading to more calcium being excreted through urine, which can be drawn from bone stores.

What would have to be true

High sodium diets, typically exceeding recommended daily limits (e.g., >2,300 mg sodium/day), though the significance of this effect on overall bone health in the general population is debated.

Excessive dietary sodium intake, often from salt added during cooking, is linked to high blood pressure and increased risk of cardiovascular diseases.

Why here

Salt is a primary ingredient added during heated cooking, directly contributing to overall sodium intake.

What would have to be true

Regular consumption of foods prepared with high amounts of salt, exceeding recommended daily intake (e.g., above 2,300 mg/day for adults).

When iodized table salt is used to cook food (e.g., pasta) with chloraminated tap water, iodinated disinfection byproducts (I-DBPs), including iodo-trihalomethanes, can form.

Why here

This chemical reaction occurs specifically during the heated cooking process when these two ingredients (iodized salt and chloraminated water) are combined.

What would have to be true

Consumption of foods cooked with iodized salt and chloraminated tap water; total I-THM levels of 11.1 ng/g were measured in pasta combined with cooking water in one study.