The length of time that a person can live with an oxygen saturation of 85 per cent can vary depending on a number of factors, including age, overall health, and the underlying cause of the low oxygen saturation. In general, oxygen saturation levels in the range of 90 to 100 per cent are considered normal and are necessary for good health. When oxygen saturation levels fall below 90 per cent, it can indicate that a person is not receiving enough oxygen in their body, which can have severe consequences for their health and well-being. For some people, low oxygen saturation levels may only be a temporary issue that can be easily resolved with supplemental oxygen therapy. For example, people who have a brief illness or are at high altitudes may experience low oxygen saturation levels, but with proper treatment, they can quickly recover. However, for others, low oxygen saturation levels may be a sign of a more serious underlying condition, such as chronic obstructive pulmonary disease (COPD), heart disease, or lung cancer. These conditions can cause permanent damage to the lungs or heart and can lead to chronic low oxygen saturation levels. People with these conditions may require long-term oxygen therapy in order to maintain their health and well-being. In severe cases, low oxygen saturation levels can be life-threatening. For example, if a person's oxygen saturation levels fall below 85 per cent, they may be at risk of developing hypoxia, which is a condition in which the body does not receive enough oxygen. Hypoxia can cause a range of symptoms, including fatigue, confusion, and difficulty breathing, and it can also lead to serious health problems such as heart attack, stroke, and organ failure. In severe cases, hypoxia can be fatal. It is important to note that the length of time that a person can live with an oxygen saturation of 85 per cent will vary depending on their individual circumstances. Some people may be able to live with low oxygen saturation levels for many years, while others may experience more severe health problems and require more aggressive treatment. In general, people with low oxygen saturation levels should seek prompt medical attention in order to determine the underlying cause of their condition and to receive the proper treatment. This may involve the use of supplemental oxygen therapy, lifestyle changes, medications, or surgery, depending on the individual case. In conclusion, the length of time that a person can live with an oxygen saturation of 85 per cent will vary depending on a number of factors, including age, overall health, and the underlying cause of the low oxygen saturation. People with low oxygen saturation levels should seek prompt medical attention to receive the proper treatment and maintain their health and well-being. With proper care and treatment, many people with low oxygen saturation levels can live long and healthy lives.