Constipation is one of the most common digestive disorders: uncomfortable, sometimes painful, it disrupts daily life. Good news: in the vast majority of cases, a few simple adjustments are enough to get things moving again, without medication. The key is to address the right causes at the right time.
Here, in a clear and evidence-based manner aligned with medical recommendations, is what constipation really is, why it occurs, when it should be a concern, and above all the natural solutions that work, including the fiber best suited to gently regulate transit: blonde psyllium.
A soluble fiber that forms a gel, increases stool volume and makes it easier to pass. The natural reflex against constipation, to be taken with a large glass of water.
Constipation is defined as fewer than three bowel movements per week, or hard stools and straining. It's a very common disorder, affecting up to 24% of adults (Krogh, United European Gastroenterol J, 2017). The most common causes are insufficient fiber and water intake, sedentary lifestyle, and holding back. Management always begins with lifestyle changes: more water, more fiber, more movement. Among fibers, blonde psyllium is one of the most effective: its gel increases stool volume and facilitates passage (McRorie, Dig Dis Sci, 2017). Should be taken with plenty of water.
1. What is constipation?
Constipation is not simply about bowel movement frequency. Medically, it involves several signs: fewer than three bowel movements per week, hard stools or small pieces, straining during bowel movements, a sensation of blockage or incomplete evacuation. It is one of the most common digestive disorders: affecting approximately 24% of adults (Krogh, United European Gastroenterol J, 2017).
In the vast majority of cases, it is a functional constipation, with no underlying disease, linked to lifestyle and diet (Aziz, Expert Rev Gastroenterol Hepatol, 2020). This is precisely the type on which natural solutions work best.
2. Why are we constipated? The causes
Constipation rarely has a single cause. Most often, several daily factors combine:
- Too little fiber : modern diets often lack it, yet fiber adds bulk to stools.
- Not enough water : without hydration, fiber cannot do its job and stools dry out.
- Sedentary lifestyle : lack of physical activity slows transit.
- Holding back : ignoring the urge to have a bowel movement, due to lack of time or privacy, disrupts the natural reflex.
- Stress and schedule changes : travel, time zone shifts, anxiety disrupt transit.
- Certain medications and diseases : opioids, certain treatments, metabolic disorders (Aziz, Expert Rev Gastroenterol Hepatol, 2020).
Good news: the primary causes, the most common ones, are easily corrected through lifestyle changes.
3. When to consult: warning signs
Constipation is almost always benign, but certain signs warrant prompt medical attention.
You notice blood in your stools, unexplained weight loss, intense abdominal pain or vomiting, recent and unusual constipation (especially after age 50), alternating constipation and diarrhea, or if your symptoms persist despite natural measures. These situations require medical advice to rule out an underlying cause.
4. Natural daily solutions
Facing functional constipation, learned societies recommend starting with simple measures, which are sufficient in most cases (Krogh, United European Gastroenterol J, 2017):
- Gradually increase fiber : vegetables, fruits, legumes, whole grains, and a targeted soluble fiber like psyllium.
- Drink enough water : approximately 1.5 liters of water per day, an essential condition for fiber to work.
- Move every day : even a daily walk stimulates transit.
- Respect the urge : go to the bathroom as soon as the need is felt, and establish a routine (often in the morning).
These habits form the foundation. To strengthen them effectively, one fiber stands out for its efficacy-gentleness ratio: blonde psyllium.
5. Psyllium: the fiber that restarts transit
Blonde psyllium (Plantago ovata) is a particular soluble fiber: when in contact with water, its husk forms a viscous gel that is not fermented and remains intact until it reaches the colon. There, it retains water, increases stool volume and makes it softer and easier to evacuate, without irritating the mucosa (McRorie, Dig Dis Sci, 2017).
This is what distinguishes it from other fibers: rapidly fermented fibers (like inulin) do not have this effect on stools, and insoluble bran can sometimes be harsh. Psyllium, on the other hand, is gentle and regulating : it works equally well for constipation and for overly soft stools (McRorie, J Acad Nutr Diet, 2017). To understand everything about this fiber, consult our complete guide to blonde psyllium.
Organic blonde psyllium, 100% husk of Plantago ovata, to be mixed in a large glass of water. Simple, natural, non-habit forming.
Discover blonde psyllium →6. How to use psyllium against constipation
7. Mistakes to avoid
A few common mistakes can worsen the situation or delay improvement:
- Increasing fiber without drinking enough water : without water, fiber can actually block transit. Hydration and fiber always go together.
- Overusing stimulant laxatives : useful occasionally, they are not meant for prolonged daily use. Natural measures and gentle fibers should be prioritized long-term.
- Doing everything at once : too rapid an increase in fiber causes bloating. Increase gradually.
- Getting discouraged too quickly : it takes a few days for transit to readjust. Consistency is key.
For bloating and swollen belly, often associated together, also see our article swollen belly: what to do.
Frequently asked questions
When is constipation diagnosed?
Constipation is generally diagnosed when there are fewer than three bowel movements per week, or in cases of hard stools, significant straining, and a sensation of incomplete evacuation. It is a very common condition, affecting up to approximately 24% of adults (Krogh, United European Gastroenterol J, 2017).
What are the main causes of constipation?
Most often: lack of fiber and water, sedentary lifestyle, holding back or ignoring the urge, stress, travel, and changes in routine. Certain medications and conditions can also be involved (Aziz, Expert Rev Gastroenterol Hepatol, 2020).
What natural solutions are there for constipation?
The basic measures, recommended first, are to gradually increase fiber intake, drink sufficient water, move more, and not hold back. A soluble fiber such as blonde psyllium is particularly useful for gently stimulating transit (Krogh, 2017).
Is psyllium effective for constipation?
Yes. Blonde psyllium forms a gel that retains water in the colon, increases stool volume, and makes stools softer and easier to evacuate (McRorie, Dig Dis Sci, 2017). EFSA recognizes that it contributes to increased fecal bulk. It must be taken with plenty of water.
How long before psyllium works?
The effect typically appears within 12 to 72 hours. Start with a small dose, increase gradually, and accompany each dose with a large glass of water for optimal and comfortable results.
When should you see a doctor for constipation?
Consult if you have blood in your stools, unexplained weight loss, severe abdominal pain, recent and unusual constipation, or if symptoms persist despite natural measures. These signs require medical advice.
- Functional constipation
- Constipation without underlying disease, related to lifestyle and diet.
- Intestinal transit
- Movement of food and waste along the digestive tract until evacuation.
- Soluble fiber
- Fiber that dissolves in water and forms a gel, such as psyllium, gentle on the intestine.
- Mucilage
- Soluble fiber that swells upon contact with water to form a viscous gel.
- Stimulant laxative
- Medication that forces intestinal contractions, reserved for occasional use.
- Krogh K, Chiarioni G, Whitehead W. Management of chronic constipation in adults. United European Gastroenterol J 2017;5(4):465-472. DOI : 10.1177/2050640616663439
- Aziz I, et al. An approach to the diagnosis and management of Rome IV functional disorders of chronic constipation. Expert Rev Gastroenterol Hepatol 2020;14(1):39-46. DOI : 10.1080/17474124.2020.1708718
- McRorie JW, Chey WD. Fermented fiber supplements are no better than placebo for a laxative effect. Dig Dis Sci 2017;61(11):3140-3146. DOI : 10.1007/s10620-016-4304-1
- McRorie JW, McKeown NM. Understanding the physics of functional fibers in the gastrointestinal tract. J Acad Nutr Diet 2017;117(2):251-264. DOI : 10.1016/j.jand.2016.09.021







