Barley Supplements and Constipation: Effects on Bowel Function
Barley supplements can actually help relieve constipation rather than cause it, as barley grain fiber contributes to an increase in fecal bulk and improved bowel movements. 1
How Barley Affects Bowel Function
Barley contains beneficial dietary fiber that can positively impact bowel function in several ways:
Increases fecal bulk: Barley grain fiber has been recognized by health authorities to contribute to increased fecal bulk, which can help promote regular bowel movements 1
Contains β-glucans: Barley is rich in β-glucans, a type of soluble fiber that has been shown to have various health benefits, though its primary recognized benefits relate to blood cholesterol and glycemic response rather than constipation directly 1
Promotes defecation: Research has shown that germinated barley foodstuff (GBF) can significantly improve defecation in healthy but constipated individuals, increasing fecal weight and water content 2, 3
Evidence for Laxative Effects
Multiple studies support barley's beneficial effects on constipation:
A study found that daily administration of just 9g of germinated barley foodstuff was effective for improving defecation in constipated humans without severe adverse effects 2
Another study demonstrated that waxy barley consumption led to increases in defecation days, defecation frequency, and stool amount 4
Triple fermented barley extract has shown promising laxative properties in animal studies, increasing gastrointestinal motility 5
Fiber Supplementation for Constipation Management
The American Gastroenterological Association (AGA) provides guidance on fiber supplementation for constipation:
Fiber supplements are recommended as first-line therapy for chronic idiopathic constipation (CIC), particularly for individuals with low dietary fiber intake 1
Among evaluated fiber supplements, psyllium has the strongest evidence for effectiveness, with limited data on other fibers including bran 1
Adequate hydration should be encouraged with the use of fiber supplements to prevent worsening of constipation 1, 6
Important Considerations
When taking barley or any fiber supplement, keep these points in mind:
Hydration is crucial: Ensure adequate fluid intake when consuming barley supplements, as insufficient water can potentially lead to constipation with any fiber supplement 1, 6
Start gradually: Begin with smaller amounts and gradually increase to allow your digestive system to adjust to the increased fiber intake
Individual response varies: While meta-analyses show that dietary fiber generally increases stool frequency in constipated patients 7, individual responses may vary
Flatulence is common: Be aware that flatulence is a commonly observed side effect with the use of fiber supplements 1
When to Consider Other Options
If barley supplements don't provide relief:
For persistent constipation, polyethylene glycol (PEG) is strongly recommended by the AGA as an effective treatment option 1, 6
Other options include magnesium oxide (with caution in renal insufficiency) and stimulant laxatives for short-term or rescue therapy 1, 6
In conclusion, barley supplements mixed in water are more likely to relieve constipation than cause it, provided adequate hydration is maintained. The fiber in barley contributes to increased fecal bulk and improved bowel movements in most individuals.