Continuously updated · last reviewed Sep 5, 2026
Each page covers one condition properly: what it actually is and what it feels like, what causes it, how common it really is and in whom, and how it's diagnosed — followed by the specific variants with a replicated link to it, and, where the research supports it, how genetics can change the way a medicine behaves.
Written in two registers so one page serves both readers: plain language first, then a clinical detail section with the precise terminology, effect sizes and diagnostic thresholds. Every claim is sourced from freely-available published research and cited on the page, so you can check us — or hand the page to your doctor. 27 conditions so far, growing continuously, and free to reuse with attribution (CC BY 4.0).
2 results in Neurological
APOE is the strongest common genetic influence on late-onset Alzheimer's disease. Its e4 form raises risk and e2 lowers it, but APOE genotype predicts probability rather than destiny.
Read more → NeurologicalA common neurological sleep-related movement disorder causing an overwhelming urge to move the legs, worse at rest and in the evening and relieved by movement, which fragments sleep and often runs in families.
Read more →