Starving the Gut Feeds the Brain

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If our bodies could speak to our brains, many would hear this: “Dear brain, please know the difference between being hungry and bored. Sincerely, I’m getting fat!” Who doesn’t turn to food when the doldrums set in?

The smart brains would offer their hosts three pieces of advice. One, eat nutritional food. Two, limit portion sizes. And three, now and again, engage in fasting. Why fasting? Because studies show that for obese and skinny people alike, after prolonged reduction of food intake, the body’s defences improve against stresses. Cardiovascular risks decline. And the brain functions better.

Temporary cessation of eating provokes chemical changes throughout the body. Ketones are a type of chemical the liver produces when it breaks down fats. The body puts ketones to work as a source of energy when food sources are absent. Ketones are also active during extended exercise or when carbohydrates are not available. Production kicks into gear during a fast.