Genetic factors in headaches range from MTHFR C677T and its link to migraine with aura to ion-channel genes like CACNA1A behind familial migraine. This article explains the most relevant named genes, what genome-wide studies reveal, and the real role and limits of genetic testing in headache management.

Ginseng response varies because gut microbes and liver enzymes like CYP3A4 and CYP3A5 process ginsenosides differently, while COMT shapes how you perceive the effect. This article explains the metabolism pathways behind individual ginseng response and how pathway-level genetic insight adds context.