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Probiotics Affect Your Thinking Too

People concerned with optimizing their health have long known, “You are what you eat.”

Now, researchers at UCLA have taken the notion a step further. They've proven, for the first time, that what you eat not only affects your physical health, it affects how you think and how your brain functions.

The scientists followed 36 women, aged 36 to 55 for four weeks. The women were divided into three groups. One group ate a yogurt product containing a mix of probiotics, another group ate a similar-looking product that did not contain probiotics, and the third group did not eat any yogurt product.

What the study, published in the peer-review journal, Gastroenterology, showed was that just as our brain function can affect our physical being (e.g. stress can cause upset stomach), the brain-gut connection is a two-way street. In other words, what we eat can alter how our brains work.

What this means it that ultimately, we may find foods and probiotics that can help prevent or treat digestive, mental, and neurological disorders, such as Alzheimer’s disease, autism, or Parkinson’s disease, says Dr. Emeran Mayer, a professor of medicine, physiology and psychiatry at UCLA’s David Geffen School of Medicine and the study's senior author.

SOURCES

"Changing Gut Bacteria Through Diet Affects Brain Function," www.sciencedaily.com, 5/28/13

"Consumption of Fermented Milk Product with Probiotic Modulates Brain Activity" by K. Tillisch et al., Gastroenterology, 2013

 

Probiotics in Childhood=Happier Adults

 

Scientists at the University College, Cork, Ireland (UCC), whose work was published in Molecular Psychiatry, have proven a connection between the amount of serotonin (a hormone which regulates mood and emotion) in adults and the amount of probiotics in their diets during the earliest development phases of life.

The researchers found that levels of serotonin (and thus happiness) were higher in adults when probiota were present in their gut during their subject’s early development. And, the connection could not be reversed, suggesting a permanent effect, essentially, lasting happiness.

 

Sources

"Early Gut Bacteria Regulate Happiness," www.sciencedaily.com, 6/12/12

"The Microbiome-gut-brain Axis During Early Life Regulates the Hippocampal Serotonergic System in a Sex-dependent Manner" by G. Clarke et al., Mol Psychiatry, 6/12/12

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