12 Hidden Causes of Brain Fog We'd Like To Clarify
5. Dehydration: The Underestimated Influence

Water is vital for every cell in the body, including brain cells, and even mild dehydration can impair cognitive function. The brain is approximately 75% water, and dehydration can lead to reduced blood flow and oxygen delivery, affecting mental performance. Symptoms of dehydration, such as headaches and fatigue, can further contribute to the sensation of brain fog. Additionally, dehydration can affect mood and energy levels, exacerbating cognitive difficulties. Ensuring adequate hydration throughout the day is a simple yet effective way to enhance mental clarity and reduce brain fog.
6. Sedentary Lifestyle: The Cognitive Stagnation
A sedentary lifestyle can have profound effects on brain health and is a significant contributor to brain fog. Physical activity increases blood flow to the brain, promoting the delivery of oxygen and nutrients essential for cognitive function. Exercise also stimulates the release of endorphins and growth factors that support neuronal health and plasticity. Conversely, a lack of physical activity can lead to reduced cognitive performance and increased mental fatigue. Incorporating regular exercise into daily routines can boost brain function, improve mood, and reduce symptoms of brain fog.
