First, this notion stems from traditional Indian medicine and some folk advice that drinking water standing up can put pressure on the kidneys or disrupt digestion.
Dr. Vipul Rustgi, an internal medicine and diabetes specialist at Spectra Pollo Hospital, Delhi (India) explains that drinking water while standing can lead to a number of minor health problems, including:
It is safe to drink water while sitting or standing. The important thing is to drink enough water, divide it into small portions throughout the day, and listen to your body's needs.
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Temporary changes in the distribution of body fluids
Research published in the US National Library of Medicine found that when participants drank standing water, the distribution of fluid in the body changed significantly compared to when they sat. Measurements showed that the amount of water inside and outside the cells was not as stable as when they sat, meaning that the drinking position affected the way the body absorbed and balanced fluids. Although this phenomenon is usually short-term, it suggests that sitting down to drink water helps the body process it more effectively, according to the Health Shots news site.
Drinking water standing up can cause bloating.
Drinking water quickly while standing can cause the water to go down to the stomach faster. This can dilute the gastric juices used to break down food. As a result, some people with weak digestive systems may feel full and have indigestion, especially those with stomach problems.
May cause dizziness
Some studies have also noted that drinking large amounts of water while standing can cause some people to experience dizziness or transient fatigue. This is due to rapid changes in fluid balance and blood pressure. However, this phenomenon is usually mild and does not pose a danger to healthy people, according to the Times Of India.
No harm to liver, heart, kidney
It's important to emphasize: There's no credible scientific evidence that standing up to drink water directly damages the kidneys, liver, or heart. Concerns like "water retention in joints causing inflammation" or "damaging the kidneys" have yet to be proven by research. What science currently confirms is that standing up to drink water can increase gastrointestinal discomfort and temporarily change the distribution of fluids in the body.
The best way to drink water
Therefore, the simplest and safest way is to sit down and drink in small sips. This habit helps the body absorb water better, reduces discomfort after drinking and supports healthy digestion.
Conversely, standing to drink does not cause direct harm, unless you drink too quickly or too much at once.
So, both sitting and standing to drink water are safe, the important thing is to drink enough water, divide it into small portions throughout the day and listen to your body's needs.
Source: https://thanhnien.vn/dung-uong-nuoc-co-gay-hai-tim-than-185251002063726267.htm
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