MTHFR Gene

If you’ve spent any time researching MTHFR, methylation, or B-vitamins in the last few years, you’ve probably heard some version of this advice: “If you have MTHFR variants, your body can’t convert folic acid into the active form of folate. So you need pre-methylated B-vitamins — methylfolate and methylcobalamin — to bypass the broken step.”

Yes — for roughly 1 in 3 adults, a standard B-Complex can absolutely cause anxiety, jitteriness, insomnia, and a racing heart. It’s not in your head. You’re not overreacting. And the supplement industry has been quietly ignoring this problem for years. The reason comes down to a specific group of ingredients in most modern B-Complex

The counter-intuitive truth about the vitamin most people take FOR anxiety — and what to do if it’s making yours worse. If you’ve felt more anxious, more wired, or more on-edge after starting a B-vitamin supplement, you’re not imagining it. B-vitamins — despite being marketed as calming, energy-supporting, and generally “good for stress” — can

A man emailed me a few weeks ago in real distress. He’d been diagnosed with an MTHFR variant years earlier, and — like tens of thousands of people who get that diagnosis — he was told he needed methylated B-vitamins. So he built a protocol. Methylfolate. Methylcobalamin. TMG (trimethylglycine, “for additional methylation support”). B6 at

A few months ago, a woman called me about her B12. She told me that when she started taking the methylated version, she felt angry. Not anxious — angry. She’d never felt that way before. I had a moment of recognition when she said that. I’d been hearing more and more stories like hers, and