Saturday, August 29th 2026
Adequate water intake is essential for health and is especially important for regulating blood pressure.
Human blood is mainly composed of water, so dehydration directly affects the circulatory system.
“When you are dehydrated, the blood volume decreases and also the blood pressure drops”, explains Jacinta Anyaoku, writes Index.hr, broadcasts Klankosova.tv.
However, this decrease causes compensatory mechanisms that can be harmful in the long run. Anyaoku adds that the body then constricts blood vessels and retains sodium in order to raise blood pressure again. Frequent or chronic dehydration, therefore, puts a strain on the heart and blood vessels, making it difficult to maintain blood pressure within healthy limits.
On the other hand, good hydration helps maintain normal blood volume and circulation. The exact effect of increased water intake on blood pressure depends on the actual level of hydration and whether it is a temporary change in blood pressure or chronic hypertension, writes EatingWell.
Regulation of blood pressure and circulation
Increased water intake may contribute to lowering blood pressure, especially in chronically dehydrated people. The lack of water in the body increases the concentration of sodium in the blood, which stimulates the secretion of the hormone vasopressin, which stimulates the kidneys to retain water, but at the same time narrows the blood vessels, which leads to an increase in blood pressure. Drinking water can ease this process and normalize blood pressure.
“When you’re well hydrated, the body doesn’t need to activate the compensatory mechanism that normally occurs with dehydration,” says Anyaoku. “This allows the blood vessels to remain more relaxed and the pressure is consequently reduced”.
If a person is already sufficiently hydrated and their blood pressure is normal, drinking water regularly helps maintain this state and normal circulation.
In addition to being able to lower high blood pressure, adequate water intake may also reduce the risk of developing hypertension.
“A large long-term study published in the journal Frontiers in Public Health followed adults for nine years. It showed that subjects who drank six or more glasses of plain water a day had a lower risk of developing hypertension than those who drank one glass or less.
While more research is needed to fully understand this connection, staying hydrated is a simple habit that supports cardiovascular health. Some studies suggest that people with hypertension are often less hydrated, which further emphasizes the importance of water.
“In the long term, increased fluid intake can promote sodium excretion, which can lower blood pressure,” says nutritionist Patricia Kolesa.
Temporary increase in blood pressure
While water generally helps regulate blood pressure, in some situations it can increase it. temporarily, which can be useful. This occurs in people who experience a sudden drop in blood pressure when they stand up, accompanied by dizziness or fainting.
While this can happen to anyone, it is especially pronounced in people with orthostatic hypotension. In this condition, systolic blood pressure drops by 20 mm Hg or more and diastolic blood pressure by 10 mm Hg or more within three minutes of standing up.
In such situations, drinking 300 to 500 milliliters of water quickly, about two glasses, can help raise blood pressure. This temporary effect can also occur in healthy people. The reason is twofold: drinking water increases blood volume, and thus blood pressure.
In addition, drinking water quickly stimulates the sympathetic nervous system, the body’s “fight or flight” response, which triggers reactions including constriction of blood vessels, which ultimately increases blood pressure.
Practical Tips for Better Hydration
It’s one thing to know you should drink more water, but it’s it’s another thing to actually do it. Experts offer some practical advice. Drinking water is not the only way to hydrate. Eating foods with a high water content also helps.
“Fruits and vegetables like watermelon, cucumbers, oranges and strawberries are high in water,” says Anyaoku, adding, “They also provide potassium and other nutrients that support healthy blood pressure.”
Make it a habit to drink water. Keep a water bottle with you at all times and try to have a glass of water close at home to stay hydrated and prevent thirst. When you feel thirsty, your body sends you a signal that it is dehydrated.
If you forget to drink, set a reminder on your phone or smart watch. Small, continuous sips throughout the day are more effective than trying to drink a large amount of water at once.
In certain situations, it is also necessary to replenish electrolytes. Minerals such as sodium, magnesium, potassium and calcium help the body retain fluids. If you exercise for a long time, stay in the heat or sweat a lot, an electrolyte drink may be helpful.
People with high blood pressure should pay attention to the sodium content of such drinks and consult a doctor. Foods rich in potassium and magnesium also contribute to maintaining healthy blood pressure
Source: prizrenpost
