May 6, 2025
Science

Why do we get dizzy and our eyes darken when we stand up suddenly?

  • July 26, 2024
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This problem, which we encounter as a result of getting up suddenly, is quite common, but also annoying. The effects are Sometimes it feels like it will never

This problem, which we encounter as a result of getting up suddenly, is quite common, but also annoying. The effects are Sometimes it feels like it will never go away.

Bride, Let’s see why we face these problems due to sudden movements.

In fact, this response of the body is known as postural or orthostatic hypotension.

It is caused by a rapid change in body position. Vision changes are observed seconds after standing up quickly, dizziness and light-headedness, a sudden and temporary drop in blood pressure occurs as a result of.

Even in these seconds not enough blood and oxygen to the brain. The oxygen supply to the light-sensitive tissue of the retina also tends to decrease. Because the retina needs a lot of oxygen to function perfectly.

Here too, when standing up, about 300-800 cc of blood is drawn into the legs, causing a temporary drop in blood pressure.

This means that suddenly 0.3 to 0.8 liters of blood flowed into the legs. This drop in blood pressure causes blood pressure in the arteries that supply blood to the brain The flow of blood after oxygen is delivered to the body is sensed by pressure-sensitive receptors in the right atrium of the heart.

These then activated receptors causes a reaction that balances a person’s blood pressure and as a result, the blood vessels constrict, the leg and abdominal muscles contract and the heart rate increases.

These effects are often unnoticeable, but if you don’t drink enough water or have an illness such as the flu, the drop in blood pressure may be more pronounced And it may take longer to reach equilibrium.

In short, blurred vision and dizziness when standing up suddenly, It is a normal reaction of the body and nothing to worry about. However, if the symptoms increase, you can consult a health care provider.

Sources: Harvard Health, LivesSideKscience.com

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