Dehydration and blood pressure: Close connection
Dehydration occurs when the amount of fluid lost exceeds the intake, reducing blood volume and causing changes in blood pressure. Blood contains about 60% huyet tuong, of which the main ingredient (nearly 90%) is water. When dehydrated, blood volume decreases, the pressure on the artery walls also decreases, leading to low blood pressure.
In some severe cases, this sudden drop can cause a shock of blood volume, threatening life. Conversely, in some people, blood pressure can increase because the body reacts to dehydration by secreting the hormones vasopressin and angiotensin, causing blood vessels to constrict, thickening blood and forcing the heart to work harder.
Many people think dehydration is just a thirst-inducing disease, but it actually directly affects blood pressure and heart health, says Dr. Josephine Hessert, a cardiologist at Jefferson Health (USA). If not detected and handled promptly, the consequences can be very serious".
Signs and ways to prevent dehydration
Common symptoms include thirst, dry mouth, dizziness, fatigue, cramps, dark urine. At severe level, dehydration can cause urinary tract infections, kidney stones, diarrhea or shock absorption of blood volume.
To maintain stable blood pressure, experts recommend:
Drink enough water according to your body's needs, depending on your activity level and weather.
Limit caffeinated drinks, as they have a mild diuretic effect.
Supplement fluids when it is hot, exercise a lot or when sick.
Eat water-rich foods such as watermelon, cucumber, spinach, strawberries.
Regularly monitor blood pressure, especially in the elderly or people with cardiovascular disease.
According to Dr. Hessert, the elderly and cardiovascular patients are the most vulnerable groups. Monitoring blood pressure combined with maintaining a habit of drinking enough water is a simple but effective measure to protect health".
Dehydration is not just a simple thirst condition but a risk factor that directly affects the cardiovascular system. Staying hydrated helps stabilize blood volume, maintain blood pressure and prevent dangerous complications. People with symptoms such as dizziness, confusion or unusual fluctuations in blood pressure need to see a doctor immediately.
