PHGG and the Brain-Gut Axis: New Research on Traumatic Brain Injury

 

The gut and the brain are more connected than most people realise. Through the gut-brain axis, changes in the gut microbiome can influence inflammation, mood, cognition, and even neurological recovery. A new study suggests that Partially Hydrolysed Guar Gum (PHGG) may play an important role in this connection.

A 2025 study published in Neurosurgical Review (Chen et al., 2025) investigated the effects of PHGG in mice with traumatic brain injury (TBI). For 21 days, the mice were given PHGG daily. The results were remarkable:

  • Improved neurological function — better performance in cognitive and behavioural tests.
  • Reduced neuroinflammation — PHGG helped protect neurons from damage.
  • Restored gut balance — PHGG improved intestinal barrier function and boosted production of beneficial short-chain fatty acids (SCFAs).
  • Brain-gut protection — by suppressing the inflammatory NLRP3 pathway, PHGG alleviated both neurological deficits and gastrointestinal dysfunction.

This research highlights PHGG’s potential not only as a digestive aid but also as a functional food for supporting the gut-brain connection and protecting against inflammation-related damage.

Wonder Foods Partially Hydrolysed Guar Gum is a pure, taste-free, soluble prebiotic fibre that easily mixes into drinks or meals. While this study was in mice, it adds to a growing body of evidence that PHGG may support brain health, gut integrity, and recovery.

Of course, nutrition works best alongside movement. Exercise itself supports cognitive resilience, circulation, and recovery after injury. An exercise physiologist can help design programs that optimise both brain and body health.

Takeaway: PHGG is emerging as more than a gut health supplement. New research suggests it may protect the brain, reduce inflammation, and strengthen the gut-brain axis — a powerful combination for long-term vitality.

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

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