New Research Shows How Intermittent Fasting Is Like Decluttering For Your Brain

If you are a health or fitness enthusiast and like to stay up to date on all the latest wellness trends, it's likely that you've heard talk about intermittent fasting and its health benefits. Fasting is definitely not a new concept and has been a theme in many cultures and religions throughout history. But lately, scientific research on the biological benefits of fasting has really taken off, drawing connections between periodic calorie restriction and the prevention of diseases.

A group of Canadian scientists recently studied the brain activity of fruit flies and found that acute fasting directly influences the stability of neuronal circuits, a type of wiring that dictates the flow of information in the brain and nervous system. According to their paper, the cellular stress and lack of nutrition catalyzed by fasting blocks the synaptic activity of neurons that normally occurs in the brain, which essentially means that the brain slows down.

And although a brain "slowing down" sounds undesirable generally speaking, it may actually be beneficial for brain health. In fact, overactive synaptic activity has been associated2 with diseases like Parkinson's, Alzheimer's, and other degenerative diseases. So in a way, when we slow down our brain activity, it's possible that we are protecting the organ by allowing it to recharge.

Results also showed an increase in ketone bodies due to fasting, which are compounds known3 to be neuroprotective, essentially guarding brain cells against degenerating to the point of disease. The ketogenic (low-carb and high-fat) diet has been used since the 1920s as an extremely effective treatmen4t for epilepsy, even though the mechanism by which is works was mostly unknown.

Sometimes we forget how much energy it takes to digest food, and if we are eating every four hours—which is totally commonplace in modern culture—we are constantly activating our body and requiring its attention. It makes sense to us that giving our digestion a break might give our body, brain, and nervous system a chance to also recharge.

This gets us thinking: Were humans even designed to eat so regularly, or are we designed to be able to withstand long periods without food? Could this be another way our modern food culture is harming us? We aren't exactly sure, but we are willing to test it out and see how we feel.