People may not realize it, but they're already experiencing a lack of oxygen (1) - Hypoxia symptoms

Many city dwellers suffer from varying degrees of hypoxia without even knowing they're sick. 

Today, I'll help you understand hypoxia more comprehensively. 

Oxygen is essential for the body's blood flow. A healthy pulse oximeter reading typically falls between 95% and 100%. Anything below 90% is considered to have low oxygen saturation. When oxygen saturation drops below 80%, it can cause damage to vital organs.

To determine if you're hypoxic, the best way is to measure your blood oxygen concentration. 

Now, let's explore the specific symptoms of hypoxia. Pay attention if you experience any of the following, as it may indicate a lack of oxygen: 

Mild symptoms: 

1. Dizziness, headaches, and ringing in the ears

2. Vertigo and weakness in the limbs

3. Nausea, vomiting, palpitations, and shortness of breath

4. Shallow, weak breathing and a rapid, weak heartbeat

5. Decreased memory

6. Fatigue, lethargy, and overall weakness

7. Increased susceptibility to allergies

8. Emotional irritability and mood swings

9. Dull skin

10. General body aches

Serious symptoms: 

1. Confusion

2. Cyanosed skin, lips, nails, etc.

3. Decreased blood pressure, dilated pupils, or coma

4. Difficulty breathing, cardiac arrest, asphyxiation, or even death

Note: Severe hypoxia poses a direct threat to life and safety. If you experience any of the serious symptoms mentioned above, please seek medical attention immediately.