While lemons are rich in vitamin C and antioxidants, beneficial for overall health, the addition of salt in salted lemon water introduces sodium, which can be problematic. Sodium causes the body to retain more water, increasing circulatory volume and putting a greater strain on the cardiovascular system. Excessive consumption of salted lemon water can therefore lead to increased blood pressure or make existing hypertension more difficult to manage. Contrary to popular belief, there is currently no medical evidence to support the claim that salted lemon water helps lower blood pressure; in fact, its high salt content can negatively impact health.

Major health organizations globally advocate for reduced sodium intake as a key strategy for blood pressure management. The World Health Organization (WHO) recommends that adults limit their daily sodium consumption to less than 2 g, which is equivalent to less than 5 g of salt. Similarly, the American Heart Association advises that most adults, particularly those with hypertension, aim for an ideal intake of no more than 1,500 mg of sodium per day.

Individuals with high blood pressure should limit their consumption of salted lemon water. Photo: Bui Thuy

For those who enjoy lemon, a healthier alternative is to consume lemon water with minimal sugar and little to no salt. This can serve as a refreshing and palatable drink. Lemon can also be used to enhance the flavor of dishes, such as pho, and help balance saltiness. Beyond dietary adjustments, individuals managing blood pressure should focus on comprehensive lifestyle changes: reducing overall salt intake, maintaining a healthy weight, engaging in regular physical activity, ensuring sufficient sleep, moderating alcohol consumption, quitting smoking, and adhering strictly to prescribed medications.

Doctor Duong Minh Tuan

Department of Endocrinology and Diabetes, Bach Mai Hospital