Ayurveda posited a form of gut-brain axis thousands of years ago (and is a core basis for its dietary aspects), interesting to see more scientific research delving into the details.
The notion that gut health impacts mental wellbeing is obvious. The specifics of it are less so.
Source on Ayurveda posits that palm reading is legitimate medicine?
Not really, they're more astrology based, not medicine, and no one is claiming astrology is factual in this thread. Also, they're clinics, not a source of any kind which is what was asked for.