Early experiments proved that salt sensitivity has a genetic component, explaining why some individuals' blood pressure is highly affected by salt while others are resistant.

A massive new 'Umbrella Review' of all research to date found no J-shaped curve, concluding that low sodium intake is not associated with an elevated risk of mortality.

Switching to a salt substitute that is 75% sodium chloride and 25% potassium chloride cut stroke risks by 14% in a recent study.

A 60-year study of patients on a rice diet with only 230mg of sodium per day showed it was safe, with a 95.6% five-year survival probability.

A controversial 2014 study suggested a J-shaped curve where both very high and very low sodium intakes were associated with increased health risks, challenging established guidelines.

Increasing daily potassium intake to 3,500-4,700mg can reduce blood pressure by as much as 7 units, as it is critical for balancing sodium in the body.

The body's response to sodium intake is not uniform, with studies showing significant differences in blood pressure and heart disease risk between populations in different global regions.