Scientists are increasingly turning their attention to an unusual means of improving brain health: silence. According to research, regular exposure to complete silence can stimulate the growth of new brain cells, reduce stress levels, and improve cognitive function.
This was first pointed out by a study by neurobiologist Imke Kirste from Duke University (USA). An experiment on mice showed that two hours of silence a day — not music or noise — leads to a significant increase in the number of neurons in the hippocampus, which is responsible for memory and learning. This was a sensation, as it had long been believed that the adult brain had virtually no capacity for neurogenesis.
In humans, silence activates the so-called default mode network (a network of passive brain activity) that turns on when we are not engaged in external tasks. At this moment, the brain structures information, strengthens memory, and initiates restorative processes. In addition, changes in brain waves are recorded: a transition from “fast” beta rhythms to calmer alpha and theta waves associated with creativity and reduced anxiety.
Similar conclusions are confirmed by studies of mindfulness and meditation practices. In 2011, Harvard proved that an eight-week Mindfulness-Based Stress Reduction program increases gray matter density in the hippocampus.
Silence affects more than just the brain:
1) it lowers cortisol levels and normalizes blood pressure and heart rate;
2) it improves concentration and cognitive clarity;
3) it helps regulate sleep and emotional state;
4) it creates conditions for creative ideas to emerge.
According to psychologists, “silence is not emptiness, but a space of presence” that helps restore balance and clarity. Thus, two hours of silence a day — whether it’s a walk without gadgets, meditation practice, or simply disconnecting from background noise — can be a powerful tool for brain and body health.
