Unusual Green Stool: When to Seek Medical Advice - Internal Medicine

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The stool is unusual?


I have my period, but my stool is green, a deep green! I don't feel unwell, and this is the first time I've experienced this.
Should I see a doctor? I'm quite embarrassed and worried about my health.

Wei, 10~19 year old female. Ask Date: 2002/08/20

Dr. Li Huixiong reply Internal Medicine


This is a normal phenomenon, please do not worry.

Reply Date: 2002/08/20

More Info


When it comes to unusual stool colors, such as deep green, it's understandable to feel concerned, especially if it's a new occurrence for you. Green stool can be caused by a variety of factors, and while it can be alarming, it is not always indicative of a serious health issue.
Firstly, the color of your stool is influenced by what you eat. Foods that are high in chlorophyll, such as leafy greens (spinach, kale), can lead to green stool. Additionally, foods with artificial coloring, particularly those containing green dyes, can also result in a similar change. If you've recently consumed a lot of green vegetables or foods with added coloring, this could be the reason for your green stool.

Another common cause of green stool is the speed of digestion. If food moves too quickly through the intestines, bile (which is green) may not have enough time to break down completely, leading to green-colored stool. This can happen due to various reasons, including stress, anxiety, or even certain medications that affect gut motility.

In some cases, green stool can be a sign of an underlying condition. For instance, infections, particularly those affecting the gastrointestinal tract, can lead to changes in stool color. Conditions like irritable bowel syndrome (IBS) or malabsorption issues can also result in green stool. If you have other symptoms, such as diarrhea, abdominal pain, or fever, it would be wise to seek medical attention.

Regarding your specific situation, since you mentioned that you are menstruating and feeling generally well without any other symptoms, it may not be urgent to seek medical advice. However, if the green stool persists for more than a couple of days, or if you start experiencing other symptoms such as pain, discomfort, or changes in your overall health, it would be prudent to consult a healthcare professional.

It's important to remember that while it can be embarrassing to discuss bowel habits, healthcare providers are trained to handle such inquiries with professionalism and confidentiality. They can provide you with the necessary guidance and reassurance.
In summary, while occasional green stool can be harmless and related to diet or digestion speed, persistent changes or accompanying symptoms warrant a visit to your healthcare provider. Keeping track of your diet and any other symptoms can help your doctor make a more accurate assessment. If you have any concerns about your health, don't hesitate to reach out to a medical professional for advice. Your health is important, and seeking help is a responsible step.

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