Conversation: The conversation between human and AI assistant.
[|Human|] My blood has been very dark in color lately. I am a bit concerned because I have not changed any of my habits. I still eat regular and as healthy as I can, I guess. I exercise daily and take regular vitamin supplements. I am a 25 year old man and I am bothered by my lack of knowledge in regards to the issue at hand. Please offer any information or insight that you can. Your time and input will both be greatly appreciated.  Thank You
[|AI|]  Hi, How did you assess that your blood is dark. Usually when injury occurs the blood will be red because it is arterial blood which contains more of O2. Suppose you are giving blood samples for investigation it will be dark because it is venous blood which contains more of CO2. Those who have bronchial asthma or a smoker may have dark-colored blood because of less % of O2 absorption in the bronchial passage. Whereas you say in all aspect you are normal. Even though O2 & CO2 monitoring machines are available better you check up your O2 saturation in the Pulse ox meter within a CT. you will find out your O2 saturation which should be 90 and above. Best wishes