Genetic mutations like MTHFR, FOLR1, FOLR2, and VDR TAQ don’t just sit there—they cause vitamin deficiencies by blocking absorption or increasing your body’s need for key nutrients. 🧬 That’s why intracellular testing is so critical—it shows you exactly where you’re deficient, long before major symptoms set in. If you’re always tired, inflamed, or struggling despite a good diet, your genes might be the missing link.