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Gene referenceSep 23, 2026
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BCO1, also called BCMO1, helps convert beta-carotene from plant foods into retinal, a form used in vitamin A metabolism. Plant carotenoids and preformed vitamin A therefore enter the pathway at different points.

Gene referenceSep 23, 2026
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Makes the methionine synthase enzyme, which uses vitamin B12 in the conversion of homocysteine to methionine.

Gene referenceSep 23, 2026
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TCN2 helps carry vitamin B12 in the body. A gene result alone cannot tell you your B12 status.

Gene referenceSep 23, 2026
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VKORC1 encodes vitamin K epoxide reductase, part of the vitamin K recycling system used in activating clotting proteins. It is not simply a vitamin K receptor.

Gene referenceSep 23, 2026
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ALPL encodes tissue-nonspecific alkaline phosphatase, an enzyme important to bone and tooth mineralization and vitamin B6 metabolism. Persistently low alkaline phosphatase can deserve a different evaluation from a general nutrient deficiency.

Gene referenceSep 23, 2026
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GSTO2 encodes glutathione S-transferase omega 2, a redox enzyme with dehydroascorbate reductase activity that connects glutathione chemistry with vitamin C recycling. It is a separate gene from GSTO1.

Gene referenceSep 17, 2026
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CYP2D6 is the gene name for Cytochrome P450 Family 2 Subfamily D Member 6. Learn what a specific result could mean and what to ask about it.

Gene referenceSep 17, 2026
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PLD3 is the gene name for Phospholipase D Family Member 3. Learn what a specific result could mean and what to ask about it.

Report teachingSep 16, 2026
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Explore D-amino acid oxidase activator (DAOA / G72), rs2391191, D-serine, NMDA receptors, glutamate signaling, and research questions about brain and mood.

YouTubeAug 6, 2026
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Can the B vitamins you are taking to support energy and methylation eventually make you feel worse? In this video, Jackson Larkin explains what practitioners often call “overmethylation,” a possible adverse response to supplemental methyl donors such as: • 5-MTHF or methylfolate • Methylcobalamin • Trimethylglycine, also called TMG • Multiple overlapping methylation formulas Possible warning signs can include irritability, anxiety, restlessness, insomnia, brain fog, fatigue, and feeling “wired but tired.” These symptoms do not prove that you are overmethylated. They can have many possible causes. The timing of symptoms, your total supplement exposure, nutrient status, genetics, medications, and health history all need to be considered. In this video, we discuss: • Why methylation is essential • How methyl-donor supplements support the body • Why the right vitamin can become the wrong dose • Ingredients to look for on your supplement labels • Why some people may need lower doses or non-methylated forms • How genetics and intracellular nutrient testing can guide a more personalized plan At Purser Wellness, we believe in a Start Low, Go Slow approach. The goal is not to eliminate methylation. The goal is to provide the right form and amount of support for each individual. Learn more or schedule with Purser Wellness: https://danpursermd.com Educational content only. Do not discontinue prescribed or medically necessary supplements without consulting your qualified healthcare professional. #Overmethylation #MTHFR #Methylation #B12 #Methylfolate #VitaminB12 #TMG #BrainFog #FunctionalMedicine #PurserWellness Follow Dr. Purser! Info: http://www.DanPurserMD.com Supplements: https://www.PhysicianDesigned.com Books: https://www.amazon.com/-/e/B00BIKSGVQ Facebook: https://www.facebook.com/danpursermd Facebook: https://www.facebook.com/PhysicianDesigned Twitter: https://twitter.com/realdanpursermd YouTube: https://www.youtube.com/danpursermd Instagram: https://www.instagram.com/danpurser.md Pinterest: https://www.pinterest.com/danpursermd

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