How to Check Your Health by Poop or Stool Colors

1 Medium brown bowel movement: Think "mb-BM" -- the healthy, reassuring color for your well being. Keep your GI system running smoothly, checking these suggested color-rules -- regularly and keep regular (twice a day is great)
Virtually all brownish-tan to medium shades of brown (color caused by bile during digestion) and even green (colored by green vegetables) are considered normal. Very dark brown stool color indicates a potentially serious intestinal condition due to bleeding
2 Dull red or dull black. Scary, but not always bad! Check this: dark or reddened stool, may often be Related to food or medications. Red shades? That may be from red food: beets and tomato sauce/paste products (eating a lot of various red sauces), BBQ, loading up on Ketchup, beets, cranberries, tomato juice (or soup), red gelatin or drink mixes, paprika and red pimiento peppers in sufficiently large amounts.
Dulled blackish shades may be seen after eating black jelly beans, black licorice, blueberries, iron pills, or using some anti-diarrhea medications.
3 Green. Shades of green are considered unusual but normal (including green seen in diarrhea, regardless of color can be very serious, when food passes through the colon too quickly for final digestion there that can cause a green shade). Green stool is not only on Saint Paddy's Day, but can be from the green beer (green dyes in the food). And, also the result of consuming

Green vegetables, including greens, spinach
Iron supplements (see black)
Or certain medications.