Wednesday, July 15, 2015

BRAIN FOOD

 A new study links what one eats to how one thinks.

A study conducted by researchers at Oregon State University and published in the journal Neuroscience  suggests that high-fat, high-sugar diets have a detrimental effect on what they refer to as “cognitive flexibility,” or the power to adapt and adjust to changing situations. 

The research was performed using laboratory mice that consumed different diets with varying levels of fat and sugar before facing a gamut of tests—primarily mazes and basic puzzles — to monitor changes in their mental and physical function. The researchers paid specific attention to the types of gut bacteria present in each control group.

“Bacteria can release compounds that act as neurotransmitters, stimulate sensory nerves or the immune system, and affect a wide range of biological functions,” Kathy Magnusson, a professor in the OSU College of Veterinary Medicine and principal investigator with the Linus Pauling Institute, said in a statement. “We’re not sure just what messages are being sent, but we are tracking down the pathways and the effects.”

In about four weeks, the mental and physical performances of the rats fed on a high-fat, high-sugar diet started to drop significantly, especially when one or more variables in the test changed. One of the most disparate physiological factors within the groups of mice, and the suspected reason for the decreased brain function, was gut bacteria.

People have been paying more attention to their guts than ever. Yogurt companies are using the term “probiotic” to peddle their sugary treats to would-be health junkies, and celebrities like sportscaster Erin Andrews are now digestive health spokespeople for hire, trying to finally make gut bacteria the hip and cool subject it deserved to be all along. But the scientific community has also started paying keener attention to those trillions of stomach-dwelling microflora as well.

One of the first studies to ever to link gut bacteria to brain function was performed by researchers at the Gail and Gerald Oppenheimer Family Center for Neurobiology and Stress.  They took three groups of women and had one group eat yogurt loaded with supplemental probiotics daily for four weeks, another group eat a substance that looked and tasted like yogurt but had no probiotics, and the third group was given nothing specific to eat. Not only did the sans-probiotic group suffer in cognitive tests, just like the mice did in the recent Oregon State study, but they also faltered in emotion based tests, linking poor gut health to stress. 

“This work suggests that fat and sugar are altering your healthy bacterial systems, and that’s one of the reasons those foods aren’t good for you.” Magnusson said. “It’s not just the food that could be influencing your brain, but an interaction between the food and microbial changes.”

The old wise tale, "you are what you eat," seems to have some scientific foundation. 

This could explain why the LOST main characters, the survivors, were slow to adapt and adjust to the changing situation of survival. The diet they had was sharply diminished from their standard life style until junk food was reintroduced with the Hatch discovery and food drop. One of the nagging issues during the series was that the main characters never asked viewer questions to each other in order to figure out what was going on. It was more action without thinking than thinking of a plan then acting it out. The latter leaders who had better brain food diets such as Ben or Sayid seemed to grasp island situations better than Hurley, Charlie or even Jack.