Tag: Lack of focus

Research consistently indicates that deficiencies in vital nutrients, such as iron and vitamin B12, can significantly impact cognitive function and cause the mental fatigue known as brain fog. This can manifest as poor concentration, forgetfulness, and mental sluggishness. Identifying what nutrient deficiency causes lack of focus is a critical first step toward reclaiming mental sharpness and clarity.

According to the National Institutes of Health, vitamin B12 deficiency is a surprisingly common condition that can significantly impair cognitive function. People experiencing a frustrating decline in concentration often wonder, "which vitamin deficiency causes lack of focus?" While B12 is a prime suspect, other nutritional shortfalls can also contribute to this mental fatigue and brain fog.