Gut protocol
Over 2,000 years ago, Hippocrates, the founder of medicine, came to the conclusion that "All disease begins in the gut."

It's a statement neurologist Natasha Campbell-McBride applies specifically to brain health, a concept dubbed GAPS (gut and psychology syndrome).

Campbell-McBride has detailed protocol for GAPS in her new book, Gut and Psychology Syndrome: Natural Treatment for Autism, ADHD, Dyslexia, Dyspraxia, Depression and Schizophrenia, and gives lectures on the connection between gut and brain heath worldwide.
"I have lost count of loving parents who call their child a zombie because of anti-epileptic medication," she announced at the 21st International New Scientific Outlook World Congress in Cambridge, England in April 2016.

"My dream is that one day our doctors will be putting them on the GAPS diet, instead of on medication," she continued. "These children, first and foremost, and in a large percentage of them, the seizures will never happen again."
The neurologist then issued a grave warning:
These depressed children, as teens, will likely turn to substance abuse in a downward spiral of drug addiction.

"I believe that we human beings are born to be happy," she said. "How do we reach the state of complete happiness? By our brain receiving a fountain of serotonin, dopamine, norepinephrine, endorphins and other neurotransmitters. The brain uses these chemicals for various functions. The more we study them, the more we realize they are actually produced in the digestive system."
The GAPS nutritional protocol
"restricts all grains, commercial dairy, starchy vegetables and all processed/refined carbohydrates while focusing on easily digestible and nutrient dense foods," according to the website.

"Almost 100 percent of serotonin is produced in the gut," Campbell-McBride told the World Congress audience. "About 75 percent of dopamine is produced in the gut. And then these substances are transported to the brain to be used."
Campbell-McBride also touts the GAPS diet as the cure for colitis, Crohn's disease, and celiac disease, based on patients she says "fully recovered" after applying the regimen.
"Our mainstream medicine is in the business of controlling symptoms," she concluded. "Not in the business of curing anything."