Re: Why is the color of my BM yellow???

Stool starts out green , then turns bright yellow as it goes through the digestive tract. It is bile and bacteria that finally turn it brown. Yellow or green stools can indicate stool is passing through the digestive tract too rapidly not giving it a chance to change colour. Bright yellow stools can also indicate not enough bile / bilary obstruction. The obstruction may be temporary as debris makes out of the common bile duct after eating. Tweet