PHGG: The Prebiotic Fibre That Supports Memory and Sleep

 When most people think of fibre, they think of digestion. But new research shows that certain fibres can do much more — even supporting brain health and sleep quality. One of the most promising is Partially Hydrolysed Guar Gum (PHGG).

A recent randomized, double-blind, placebo-controlled study published in Nutrients (Abe et al., 2024) examined the effects of PHGG in healthy older adults. Participants consumed 5g of PHGG daily for 12 weeks. Results showed:

  • Improved visual memory compared to placebo
  • Better sleep efficiency and reduced morning sleepiness
  • Increased vitality and lower scores for confusion and fatigue

This makes PHGG not only a digestive aid but also a functional food for healthy ageing, cognitive support, and overall wellbeing.

Wonder Foods Partially Hydrolysed Guar Gum is a 100% natural, tasteless, and gentle prebiotic fibre that can be mixed into water, smoothies, or food. Along with improving gut microbiome balance, emerging research suggests it may help with memory, mental clarity, and sleep quality.

Lifestyle also plays a role. Movement enhances circulation, sleep, and cognitive performance. Working with an exercise physiologist ensures your training program complements your nutrition, maximising both brain and body benefits.

Takeaway: PHGG is more than fibre — it’s a daily supplement that supports gut health, memory, vitality, and sleep. A simple addition that delivers whole-body benefits.

This article is brought to you by Propel Health, the Australian company behind Wonder Foods.

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