THE PURSER WELLNESS ENCYCLOPEDIA

Let’s explore “Vitamin A”

A RELATED COURSEGetting to know your micronutrients

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Gene referenceSep 23, 2026

BCO1

In the description

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

VDR

In the description

VDR encodes the vitamin D receptor, which helps regulate gene activity in response to active vitamin D. A receptor variant does not by itself mean receptors are absent or that the blood vitamin D level is low.

Gene referenceSep 23, 2026

ALPL

In the description

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

GSTO2

In the description

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.

YouTubeAug 6, 2026

OVER-METHYLATION - Are Your B Vitamins Hurting You?

In the description

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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InstagramJul 20, 2026

What if the key to feeling better isn't another health trend—but understanding the nutrients your body depends on…

In the description

What if the key to feeling better isn't another health trend—but understanding the nutrients your body depends on every day? Vitamin C. B vitamins. Iron. These essential nutrients influence everything from energy production and immune fun

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FacebookJun 18, 2026

How many health problems are being blamed on everything except the real cause?

In the description

How many health problems are being blamed on everything except the real cause? Vitamin B6 is one of the most overlooked nutrients in wellness conversations, yet it plays a critical role in everything from energy and mood to brain function

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InstagramApr 20, 2026

Discover the power of B12 with Dr. Dan Purser MD and Purser Wellness Coach Jackson Larkin! Learn how this essential…

In the description

Discover the power of B12 with Dr. Dan Purser MD and Purser Wellness Coach Jackson Larkin! Learn how this essential vitamin can boost your energy, support your health, and transform your wellness journey. Ready to feel your best? Join us an

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InstagramApr 18, 2026

Unlock the power of B1 Thiamine! Join Dr. Dan Purser MD and Purser Wellness Coach Jackson Larkin as they reveal how…

In the description

Unlock the power of B1 Thiamine! Join Dr. Dan Purser MD and Purser Wellness Coach Jackson Larkin as they reveal how this essential vitamin can boost your energy, support your nervous system, and help you feel your best.

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