For many people, showering is one of the most relaxing moments of the day. However, what few realize is that certain seemingly harmless habits in the bathroom can become a silent trigger for serious cardiovascular problems, especially after age 60.
Sudden dizziness, falls, spikes in blood pressure, and decreased blood flow to the brain can begin with something as simple as a poorly taken shower. The risk isn’t in the water itself, but in how, when, and for how long we use it.
1. The Danger of Excessively Hot Water
Very hot water causes a sudden dilation of the blood vessels in the skin. This causes blood to redistribute rapidly and blood pressure to drop sharply.
In older adults or those taking blood pressure medication, this drop can cause:
Dizziness
Leg weakness
Blurred vision
Fainting
Fainting in the bathroom almost always ends in a fall, and a fall can lead to head injuries, brain hemorrhages, or fractures.
What to Do
The safest temperature for the body is lukewarm, close to body temperature, between 36 and 38 °C (97 and 100.4 °F).
If the water burns when you touch it with the back of your hand, it’s too hot.
2. Showering Right After Eating
After a meal, much of the blood is directed to the digestive system. If you then take a hot shower, the heat also draws blood to the skin. The result is internal competition for blood flow.
This can cause a dangerous drop in blood pressure, leading to dizziness and fainting.
The Recommended Approach
Wait at least 60 to 90 minutes after a large meal before showering.
If you need to shower sooner, it’s best to do so partially with lukewarm water.
3. Sudden Changes from Hot to Cold
Going from a hot shower to a cold environment causes a sudden constriction of the blood vessels. This leads to a sudden increase in blood pressure.
In people with hardened arteries or hypertension, this pressure surge can overload the heart and brain.
How to avoid it:
Prepare the bathroom before showering.
Don’t jump in or out of the water abruptly.
Gradually lower the water temperature at the end.
Dry yourself inside the warm area before getting out.
4. Long showers and accumulated steam
Steam and excessive heat create an environment that promotes:
Dehydration
Prolonged low blood pressure
Increased heart rate
Weakness and dizziness
The longer you stay in the shower, the greater the risk.
Safe time
An effective shower should not last more than 5 to 10 minutes.
Ventilating the bathroom is key to avoiding the “sauna” effect.
5. The Greatest Danger: Falls
Falls in the bathroom are a leading cause of:
Brain hemorrhages
Hip fractures
Thrombosis and embolisms
A simple dizziness can trigger a chain of serious medical events.
Essential Measures
Non-slip mats inside and outside the bathroom
Sturdy grab bars
Good lighting
Objects within easy reach without bending over
Shower slowly
Is cold water dangerous?
The problem isn’t the cold water itself, but the sudden change in temperature. Extreme cold causes spikes in blood pressure, which can be risky for people with cardiovascular disease. Therefore, it’s always best to enter and exit the water gradually.
Tips and Recommendations
Drink a glass of water before showering to avoid drops in blood pressure.
Always use lukewarm water, not hot.
Don’t shower if you feel dizzy or faint.
If you have balance problems, consider using a shower chair.
Keep the bathroom well-ventilated and well-lit.
Never rush when getting out of the shower.
Showering can be a moment of well-being or a silent risk. With small changes in temperature, time, and environment, it’s possible to protect your heart, brain, and physical independence. Taking care of yourself every day is one of the most powerful forms of prevention.