Suplemento alimentar probiótico psicoactivo?

Probiótico afecta disposição, capacidade mental e sono (para além da saúde gastro-intestinal)?
https://www.mirror.co.uk/lifestyle/health/worlds-first-psychobiotic-food-supplement-13820955

Citando:
"Traditionally, probiotics containing live bacteria and yeasts have been thought to be good for the gut.

But they have now been linked to a sense of happiness and a boost in brain power."

(...)

"The food supplement named Zenflore has become one of the first ‘psychobiotics’ available over the counter.

(...)

"Breakthrough research carried out in Ireland three years ago found that bacterial culture bifidobacterium longum 1714 can increase activity in the areas of the brain associated with emotions, learning and memory."

IBS e probiótico Alforex

http://www.express.co.uk/life-style/health/775658/IBS-symptoms-pain-diet-treatment

Citando:
"While past research has suggested identifying and avoiding foods or drinks that trigger symptoms, altering the amount of fibre in your diet, and regular exercise can help relieve symptoms, a new probiotic, called Alflorex, is believed to be an effective solution. 
A result of more than 15 years of clinical research and 75 leading scientific publications, Alflorex contains a probiotic strain called B. infantis3564 which specifically targets and alleviates the symptoms of IBS. 

It was recently launched in the UK - the strain is known in the US as Align - is has been recommended as the number one probiotic for the treatment of IBS by gastroenterologists. 

Professor Eammon Quigley, one of the world’s leading Gastroenterologists in IBS and Chief of Gastroenterology at Houston Methodist Hospital, told Healthista: “The gut bacteria plays an important role in many digestive health issues. 

“B.infantis 35624, the strain in Alflorex, is one of the few products that has been truly developed on a scientific basis and tested in high quality clinical studies to hep the symptoms of IBS.”"