Articles
Evidence-based guides on focus, brain fog, and mental clarity from Focus Daily.
Brain fog
- Brain Fog: What It Is, What Causes It, and How to Clear It
Brain fog is not a diagnosis but a set of symptoms: fuzzy thinking, poor focus, and forgetfulness. Here are the common causes and the evidence-based habits that clear it.
- Can Dehydration Cause Brain Fog?
Yes. Even mild dehydration, a fluid loss of 1 to 2 percent of body mass, measurably worsens concentration, working memory, and mood. Here is the evidence and what to do.
- Why Poor Sleep Causes Brain Fog (and How to Fix It)
Short or broken sleep slows your attention and vigilance and weakens working memory, which is exactly what brain fog feels like. Here is the evidence and the fix.
- Vitamin B12 and Brain Fog: What the Evidence Actually Says
A genuine B12 deficiency can cause real cognitive symptoms, but if you are not deficient, supplementing has not been shown to sharpen thinking. Here is the honest picture.