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.
The more hydrated one is, the clearer the color and the greater the urinary frequency. On the other hand, darker yellow urine is associated with dehydration and less urinary frequency. Vitamin b2 (riboflavin), present in most multivitamins, is what imparts a more colorful yellow/orange urine.