Soy sauce may seem harmless, but it contains such a high amount of sodium that a single tablespoon can cover more than a third of the recommended daily limit. In people with diabetes — who often also have high blood pressure or kidney problems — this excess can aggravate blood pressure and damage blood vessels. Even the “low-sodium” versions are still very salty, so they should be consumed in moderation.
Sweet varieties: hidden sugar
Some versions, such as sweet soy sauce or “kecap manis,” incorporate syrups and sugars for flavor. This quickly raises blood glucose, which is especially risky for those who already have insulin resistance or diagnosed diabetes.
Hidden risks in sensitive people
In addition to sodium and sugar, traditional soy sauce is a fermented product that may contain traces of tyramine, a substance that can raise blood pressure in people who take certain medications or who are sensitive to this compound. It can also cause digestive discomfort in people with histamine intolerance.