Hi, Lily. I wouldn't worry so much about the color of your stools, since food and various vitamin/mineral supplements can cause color changes. What is the consistency of your stools when they are yellow/tan? If you're having diarrhea with that color stool, it may be too much bile from the liver dumping directly into your intestine. For example, the darker brown my stools are, the more firm in consistency. When I have yellowish stools, I also tend to have loose or even runny. Sorry to be so gross.
If the color changes are a new condition, you may even want to see your doctor to see what s/he says about it. But I think that changes in color are no big deal (as long as you're not seeing red or black in your stools which could indicate blood). Changes in consistency can be a sign of something wrong if the condition lasts and doesn't return to "normal."
Hope I'm not giving you misinformation, but it's just my opinion. Others will probably respond to your post, too.
Good luck to you,
Katie G
| 
what is the normal color of bowel movements? 
Linear Mode
