Recently, an article titled "The Dangers of Salt" has been making the rounds on social media. It claims that when you consume too much salt, the increase in osmotic pressure causes your body to expel more water, which is detrimental to skin hydration. This, in turn, can lead to a dull, sallow complexion and may even cause freckles to appear on the cheeks.
This claim is utterly ridiculous! If one must insist on a so-called "mechanism," it must be borrowing the logic from pickling vegetables. When vegetables are salted, they become dry and discolored. However, the human body is a complex, precise, and dynamic organism. As long as a person is not terminally ill, their cells and the enzymes within them exist within a stable environment with a stable osmotic pressure, which is sufficient to buffer against various external stimuli. Otherwise, humanity could not have survived and multiplied to this day. In other words, the body's fluids constitute a large buffering system designed to counteract changes in osmotic pressure, as well as acidic and alkaline stimuli.
For instance, when you eat too much salt, you feel thirsty and instinctively drink more water. This is to maintain the body's normal osmotic pressure. The body will not passively allow osmotic pressure to rise continuously, leading to subsequent problems, unless it has lost its ability to regulate. If it truly reaches that point, the issue would no longer be about freckles; it would certainly have progressed to a serious medical condition involving fluid metabolic imbalance.
As for freckles, they are tan or brown pigmented spots, most commonly seen in young and middle-aged women. Doctors have long noted the familial tendency of freckles, meaning they are largely dependent on genetics. In other words, if both parents have freckles, the probability of their children having them is significantly higher. It is currently believed that freckles are caused by abnormal melanocytes in the basal layer of the epidermis. While influenced by genetics, they are also related to sun exposure. The most effective way to prevent freckles and other facial spots is sun protection. This has absolutely nothing to do with eating salt or soy sauce. Although consuming too much salt has its dangers, such as high blood pressure, it is truly unrelated to freckles.