These include anemia, hypotension, COPD, diabetes, chronic fatigue syndrome and Addison's disease. Causes also include influenza, dehydration, jet lag, depression, malnutrition, bacterial diseases, hypothyroidism, myasthenia gravis, viral infections, chronic pain, fever and pregnancy.
1 Bright yellow urine can mean that your body is dehydrated and also it can mean you are highly acidic. 2  Yellow urine indicates that a person is able to flush out acids stored in the body or that a person's body is not able to process the food that he is eating.3  If it is the first situation it is good. Asparagus is another veggie that will make your urine bright yellow. 2  Drink lots of water (8 glasses a day) and that will help to flush out the kidneys. 3  Bright yellow urine can mean that your body is dehydrated and also it can mean you are highly acidic.
However, along with quite innocent causes of dark yellow urine, if there are other warning symptoms like burning and painful sensation in the lower abdomen, inability to fully empty the bladder, bladder leakage, fever and foul smelling urine, it might signal the beginning of a urinary tract or bladder infection.