Why accident victims beg for water—and why you shouldn’t give it to them, according to a nurse

By Abigail David

People who witness road accidents often want to help injured victims by offering them water, especially when the person repeatedly asks for a drink. However, emergency medical guidance generally advises against giving food or water to someone who has suffered a serious injury before they are assessed by healthcare professionals.

A recent viral social media video by a nurse has renewed discussion about the issue. While some of the explanations in the video align with established first-aid recommendations, one claim—that drinking water “thins the blood” and prevents clotting—is not supported by current medical evidence.

Why medical professionals usually avoid giving water

1. It may increase the risk of choking

A person involved in a serious accident may have sustained head, neck or spinal injuries that affect their ability to swallow safely. Even if they are conscious, water could enter the airway instead of the stomach, leading to choking or aspiration, where fluid enters the lungs.

2. Emergency surgery may be required

Trauma patients sometimes need urgent surgery under general anaesthesia. Having food or liquid in the stomach increases the risk of aspiration during the procedure, which can cause serious complications. For this reason, hospitals generally prefer patients to remain without food or drinks until they have been assessed.

3. The “water thins the blood” claim lacks evidence

The viral claim that drinking water prevents blood from clotting is not supported by current medical evidence. Blood clotting depends on complex biological processes, and there is no established evidence that a small amount of water interferes with clot formation in trauma patients.

Why accident victims feel thirsty

Feeling thirsty after a serious injury is common and may result from blood loss, shock, pain, anxiety or dry mouth. However, thirst alone does not mean it is safe to drink water immediately.

What you should do instead

If you encounter an accident victim:

• Call emergency medical services immediately.
• Keep the injured person as still as possible, especially if a neck or spinal injury is suspected.
• Reassure the person and monitor their breathing and consciousness.
• If their lips are dry, gently moisten them with a clean, damp cloth rather than giving them water, provided it does not interfere with their airway.
• Do not give food or drinks to anyone who is drowsy, confused or losing consciousness.

Emergency care experts generally recommend waiting for trained medical personnel to assess the injured person before offering anything by mouth.