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Gene referenceSep 23, 2026
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Makes an enzyme involved in producing phosphatidylcholine, a component of cell membranes. Genetic findings alone do not establish a choline deficiency.

Nutrient referenceSep 23, 2026
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Contributes to cell membranes, acetylcholine and transport of fats from the liver.

Gene referenceSep 23, 2026
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CHDH helps convert choline toward betaine, a nutrient involved in the homocysteine pathway. Also called: Choline Dehydrogenase Choline can serve more than one purpose CHDH helps convert choline toward betaine, while PEMT helps make phosphat…

Learning essentialsSep 23, 2026
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…help with one recycling route. Betaine, which can come from choline, helps with another. CBS and CTH carry out the two core steps toward cysteine. These nutrients and enzymes work together, but they do different jobs. How Dr. Purser connect…

Books & reading guidesFrom the archive
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25+-Questions-Men-Should-Ask-About-Testosterone Questions to ask about testosterone Why this matters Prepare a clear set of questions about testosterone results, goals, options, and follow-up. How the pieces connect Start with four quest…

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