Fibre supplements new findings on Brain health and cognitive function benefits

Maybe not new but as gut health seems to be one of the most significant indicators linked to brain disease and cognitive decline and taking Fibre supplements as in this study at Kings, is cheap and has minimal side effects compared to most other treatments, so little to loose?

Anyone more knowledgeable know more about this and any relevance to Parkinson’s and what the best Fibre Supplements are to take?

Daily fibre supplement improves older adults' brain function in just 12 weeks.

I have ground linseed on my porridge and I eat soda bread and a normal diet with vegetables . I also use intermittent fasting.