French newspaper Le Monde said that the medical examinations of gold miners in the city of Larinconada in southeastern Peru - the highest city in the world - showed that their bodies had reached the highest levels of tolerance, and that it reached a frightening degree that would enter them into the emergency room.
The newspaper pointed out that the size of blood cells is about 80% greater than the normal situation for people who work at an altitude of 5300 meters above sea level, and that they have eight liters of blood instead of the usual five and that the blood vessels and the right ventricle have always dilated.
The newspaper pointed out that these physical conditions appear as a result of a lack of oxygen, which is 50% less at the top than it is at sea level, which leads all those who live in the heights to bear the maximum limits of the capabilities of the human body even if not all of them feel ill.
A team of 12 scientists headed by Samuel Virgis of the Laboratory of Hypoxia and Physiology had developed a laboratory for blood, breathing and genetics tests in Larinconada, that ghost town that was born from mass migration in search of gold, where more than fifty thousand people live without running water or sanitation Or doctors.
The researchers wanted these tests to understand the reasons for limiting chronic mountain diseases - a syndrome that combines several symptoms such as headache, shortness of breath, palpitations, arthritis, tinnitus, sleep disturbance and vascular disorders - to a quarter of the residents of these areas, at a time when it is believed that permanent human life is impossible.