Just had blood work done and one of my issues is my blood urea nitrogen level is high. Its 28mg/dl and the high end of the scale is 26mg/dl. I drink over a gallon of water a day and that is mainly all I drink... besides a powerade here and there and a glass of crystal light with my dinner. Is this just due to a high protein diet? stats are 25 y/o 218lbs 6'2" and I consume about 360g of protein a day.