Food for thought: How your belly The surprisingly dramatic role of nutrition 1 day ago   14:31

TEDx Talks
"Have you ever had a gut feeling or butterflies in your stomach? Has hunger ever changed your mood? Our bellies and brains are physically and biochemically connected in a number of ways, meaning the state of our intestines can alter the way our brains work and behave, giving a whole new meaning to 'Food for thought'.

As a nutritionist, microbiologist and neuroscientist, Ruairi Robertson is passionate about the link between our bellies and brains. His research is examining how our intestines and the microbes within them can influence both physical and mental health, and most importantly how our diets influence this relationship. Ruairi has travelled the world researching food, and believes it is the key to global public health. Ruairi is a PhD student in University College Cork in Ireland and current Fulbright Scholar (2015/16) to Harvard University.

This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

Comments 731 Comments

Priya Kulkarni
90% of our body cells are bacterial cells is a big Lie
Rodney Paterson
the gut the skin the heart the servo mechanism in the joint then the 7 kgs of symbiots.
Rodney Paterson
the second, the brain the skin, third the heart, then the symbionts.
Floramie Romero
long story short: yakult everyday everyday ok 👌
Naushad Khan
John Doe
Your gut doesn’t lie !
Oleksandra Bakun
It's weird for me that Ruari thinks that Mechnikov's ideas or him as a person were forgotten. I've heard this name lots and lots of times in my life and there are numerous monuments to him in Ukraine (and, I guess, all over ex-Soviet Union countries, too). Also, if not for the subtitles, I would not understand he speaks about Ilya Mechnikov. He pronounces the scientist's name in an extremely weird way (it's [il'ya], no ['ela]). Otherwise, a great talk, and I sould definitely write down that list of foods that help positive microbacterias emerging (I would eat whole grains, apples and bananas anyways, though:)
Claudia Vlahović
Brilliant ❣🙏🏻
Raymond J Fox
Excellent talk, well presented and an alert to take some responsibility/action
Abhishek Jha
10:57 (list of food for bacteria growth)
I always thought our other brains were a little lower.
Chris Hart
Love the 'you might have to think twice about that' joke which was completely missed by the audience. Great talk. This guy is on to something. Modern western diets are a disaster not only for our wellbeing but for the environment and social equality. System change needed!
Prafull Kamble
Just Chew your food 32 times before swallowing You will be fascinated by seeing th results of this ancient Indian technique.
Devil Gargosha
just thumb down it's ted
Luciana Pinto
Thank you so much Dr. Robertson! I’m not a doctor but however i’m really interested in relationship between food and health and you are just confirming my empirical idea about that 💚🙌🏻
Michaela Clarke
Thanks you, excellent message, very important. Bacteria are the brain of the world, linking all things. The mind of God...and our right brain. I'm never taking antibiotics again. Luckily many more natural healing options are available, from sacred indigenous medicines, to herbal remedies, such as oregano oil.
Michaela Clarke
Maybe the Toxoplasmosis Gondii would rather be living in a cat than a mouse? I know I would...
Miranda Scott
I love this speech so much. I could... and have watched it over and over for hours. The subject and delivery are just wonderful.
Benson Chugga
We got more bacteria cells than human cells?..
Which Medical school teaches this?
Am out
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The surprisingly dramatic role of nutrition Food for thought: How your belly 1 day ago   17:43

NOTE FROM TED: Please consult with a mental health professional and do not look to this talk for medical advice as the intersection of mental health and nutrition is still an emerging field of study. We've flagged this talk for falling outside TEDx's curatorial guidelines because it oversimplifies interpretations of legitimate studies. TEDx events are independently organized by volunteers. The guidelines we give TEDx organizers are described in more detail here:

This talk was given at a local TEDx event, produced independently of the TED Conferences. In this critically important talk, clinical psychologist Julia Rucklidge explores a range of scientific research, including her own, showing the significant role played by nutrition in mental health or illness.

Julia J Rucklidge, PhD is a Professor of Clinical Psychology in the Department of Psychology at the University of Canterbury, Christchurch, New Zealand. Originally from Toronto, she did her training in neurobiology (McGill) and Clinical Psychology (University of Calgary). Her interests in nutrition and mental illness grew out of her own research showing poor outcomes for children with significant psychiatric illness despite receiving conventional treatments for their conditions. For the last 6 years, she has been investigating the role of micronutrients in the expression of mental illness, specifically ADHD, Bipolar Disorder, anxiety and more recently, stress and PTSD associated with the Canterbury earthquakes.

About TEDx, x = independently organized event In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)

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