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 color of the urine is affected by a pigment called urochrome. Urine odor and color depends not only on the foods and beverages we consume throughout the day but on the medications we take and underlying medical conditions. Dark yellow urine can have multiple causes in nature both harmless and serious. If a person is dehydrated or simply not drinking enough liquids he will end up with dark yellow urine. As soon as the liquid intake is increased, the urine will quickly change its color to a straw-like light yellow.