In recent years, cold showers have become popular because of their supposed benefits for energy and circulation. However, in older adults or people with cardiovascular conditions, the shock of cold water can trigger a sudden reaction in the body.
When the body experiences a sudden cold shock, a phenomenon called peripheral vasoconstriction occurs.
This means that thousands of small blood vessels in the skin and extremities suddenly contract in order to conserve heat.
The result is a sudden increase in blood pressure.
In some cases, this increase can be significant within just a few seconds.
For a healthy heart, this may not be a problem. But for a heart with stiffer arteries or a history of high blood pressure, the impact can be considerable.
When Several Factors Combine
The risk becomes greater when this habit is combined with other common morning factors, such as:
- Dehydration
- Getting out of bed too quickly
- High blood pressure
- Existing heart conditions
For example, getting up suddenly can cause orthostatic hypotension, a temporary drop in blood pressure that leads to dizziness or fainting.