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.
If you've eaten anything recently with yellow dye in it, that could also be a reason for bright yellow urine. Sometimes, very colorful urine indicates dehydration. The more concentrated urine is, the darker or richer the color of it is. If you have no other symptoms, such as pain with urination, abdominal pain, or lower back pain, your bright yellow urine probably doesn't mean anything, in terms of your overall health. If you develop any problems urinating or if the bright color persists, then by all means consult a medical professional.