Editorial Methodology & Evidence Grading
How this library was built, what counts as evidence here, where AI helps, and where uncertainty stays uncertainty.
Where we usually tell people to start
Fix Sleep First
Lock your wake time to the same time 7 days a week. During deep sleep, overnight brain-maintenance activity increases substantially (per sleep hygiene consensus). Poor sleep often leaves thinking heavier and slower the next day. Fix this before chasing anything more complicated.
Get the Blood Panel
A single blood draw can reveal what no lifestyle change will fix. Request TSH, Free T3/T4, Ferritin, B12, Vitamin D, hs-CRP, and HbA1c. Diagnosis must precede treatment.
Targeted treatment
Once a driver is identified, whether that is iron deficiency or thyroid dysfunction, the next move should match the actual problem. Most real improvements are measured in weeks to months, not overnight.
Investigate the harder cases
If sleep and standard labs are optimal, move to evaluating deeper causes: gut dysbiosis, chronic infections (Long COVID/Lyme), perimenopause, or intracranial structural issues.
How the site is actually built
We start with literature review, guideline review, practical testing logic, and lived-experience wording that sounds like something a real patient might say. Then we organize that material into cause pages, comparison prompts, tests, and handouts that are meant to be usable when someone is tired, overwhelmed, or already getting brushed off.
Some drafting, restructuring, and copy-cleanup work uses AI assistance. That speeds up early drafts and helps compare alternate phrasings, but it is not treated as evidence and it is not treated as a reviewer. If a paragraph sounds slick but vague, repetitive, or overconfident, it is supposed to be rewritten or cut.
Evidence Tiers
Tier A: Strong
Supported by meta-analyses, multiple randomized controlled trials (RCTs), or established clinical guidelines (e.g., ACOG, ATA, IDSA). Considered standard of care.
Tier B: Moderate
Supported by individual RCTs, systematic reviews, or strong cohort studies. Clinically used but may not be universally endorsed by all medical societies.
Tier C: Preliminary
Supported by pilot studies, case series, or strong mechanistic rationale. Often labeled as "Emerging." Not standard of care.
Tier D: Emerging / Anecdotal
Supported by preclinical data (animal/in vitro studies), case reports, or widespread community-reported efficacy. Requires caution and professional supervision.
What the evidence tiers are not
These A-D labels are a house editorial shorthand, not a formal GRADE-style framework. They exist so readers can quickly tell the difference between strong human evidence, decent but limited evidence, and early or speculative material. If you need formal guideline-level decision support, go to the underlying guideline and primary literature directly.
Prevalence Estimates
Tags (COMMON / UNCOMMON / RARE) estimate prevalence among patients presenting with chronic cognitive dysfunction, not the general population. Where epidemiological data is sparse, estimates are derived from clinical case series. For example, ADHD affects ~5% of adults overall but is categorized as COMMON among those seeking help for chronic brain fog.
Handling Uncertainty
Medicine is an evolving science. Emerging areas are explicitly flagged and framed with language such as "emerging research suggests" or "some clinicians aim for." "Optimal" lab ranges represent functional and integrative medicine targets, not universal consensus - standard reference ranges are often provided alongside for context. Where literature conflicts, we note the conflict.
What this site does not claim
- It does not diagnose anyone from one story.
- It does not pretend a clean mechanism explanation is the same thing as proof.
- It does not treat community stories as clinical evidence.
- It does not assume one cause explains every case of brain fog.
This information is for educational purposes only. Typically, consult with a qualified healthcare professional.
Related Causes
Methodology readers need links to causes where scoring logic is easiest to understand.