Q . My urine has been very dark yellow for over a year. It does not seem to matter how much I drink - 5 litres a day and it's still dark. Could this be another problem apart from dehydration? I live in a hot climate but am otherwise in good health. A. You are quite correct to suspect dehydration as it is the most common cause of dark urine.
In addition stress can have direct effects on the skin (rashes, hives, atopic dermatitis, the gastrointestinal system (GERD, peptic ulcer, irritable bowel syndrome, ulcerative colitis) and can contribute to insomnia and degenerative neurological disorders like Parkinsonâs disease.
Higher and more prolonged levels of cortisol in the bloodstream (such as those associated with chronic stress) have been shown to have negative effects, such as: 1  Impaired cognitive performance. 2  Suppressed thyroid function. 3  Blood sugar imbalances such as hyperglycemia.  Decreased bone 1  density. Decrease in muscle tissue.  Higher blood pressure.