DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone. DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms.Nearly every cell in a personâs body has the same DNA.Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).NA is a double helix formed by base pairs attached to a sugar-phosphate backbone. DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms.
1 In particular, blood pressure lowering medications may cause faintness if they lower your blood pressure too much. 2  Anxiety disorders. 3  Certain anxiety disorders may cause lightheadedness or a woozy feeling often referred to as dizziness.
Two common reasons for tiredness or lethargy are having too high or too low blood sugar levels. In both cases, the tiredness is the result of having an imbalance between oneâs level of blood glucose and the amount or effectiveness of circulating insulin. If you feel tired during the day, despite having slept well, it could be a result of either high or low sugar levels. It is best to test your blood glucose levels to see whether the tiredness is indeed a result of having high or low sugar levels. This is particularly important for people on insulin. 1  Read about the recommended blood glucose levels ranges.