Plantago ovata
Psyllium husk is a soluble fibre derivedfrom the seeds of Plantago ovata and is one of the most well-studied fibresupplements for digestive and cardiometabolic health. It has been widely usedfor decades in both clinical and dietary settings.
Its primary function is to form a gel-like substance in the gut, which slowsdigestion, supports regular bowel movements, and influences cholesterol andblood glucose levels. Because of this, psyllium is frequently recommended as afirst-line dietary intervention for improving gut health and reducingcardiovascular risk factors.
Psyllium husk is composed almost entirelyof soluble fibre:
- Soluble fibre — forms a viscous gel in the gut
- Arabinoxylans — key polysaccharides responsible for its functionalproperties
- Minimal calories and negligible fat/protein
Its high soluble fibre content is responsible for its physiological effects ondigestion, cholesterol, and glycaemic control.
In the digestive system, psyllium absorbs water and forms a gel, which helps regulate bowel movements and supports a healthy gut environment. This makes it effective for both constipation and overall digestive health. From a metabolic perspective, psyllium has been shown to lower LDL cholesterol and improve glycaemic control by slowing the absorption of carbohydrates. These combined effects make it one of the most evidence-backed fibre sources for supporting long-term cardiometabolic health and longevity.
Contributes to overall plant diversity and a broad spectrum of phytonutrients.
Meta-analysis
Psyllium significantly reduced LDL cholesterol, non-HDL cholesterol, and apolipoprotein B.
View on PubMed →Randomised Controlled Trial
Psyllium significantly reduced body weight, fasting blood glucose, HbA1c, cholesterol, and triglycerides in type 2 diabetes patients.
View study on PubMed →Clinical Trial
Psyllium as an adjunct to diet produces sustained cholesterol-lowering effects in hypercholesterolaemia.
View study on PubMed →Psyllium husk is one of the most evidence-backed fibre sources for supporting digestive, cardiovascular, and metabolic health. Its ability to improve cholesterol levels, regulate blood glucose, and support gut function makes it a cornerstone ingredient in a longevity-focused dietary approach.
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