The enzyme family that processes roughly half of all prescription drugs. Your version determines whether standard doses work perfectly, cause side effects, or barely register. This prevents the trial-and-error prescribing that leaves people cycling through medications, wondering why nothing works right.

Methylation is the behind-the-scenes regulator of detox, neurotransmitter production, and gene expression. Suboptimal activity is surprisingly common—and highly responsive to the right form of B-vitamins. If you've ever taken B-complex and felt nothing (or worse), this is probably why.

Your mitochondria are cellular energy factories. Genetic baseline efficiency varies, and lower capacity often shows up as fatigue that sleep doesn't fix. CoQ10, PQQ, creatine, and strategic carb timing can make a noticeable difference, but only if you know you need them.

MTHFR converts synthetic folic acid into the active methylfolate your body uses. Reduced function is common, affecting up to 40% of people. If you're one of them, standard prenatal vitamins and fortified foods won't cut it. Methylfolate supplementation bypasses the bottleneck entirely.