Author Archives: Nancy Mullan, MD

About Nancy Mullan, MD

Some people call Dr. Nancy Mullan the MTHFR genetic medicine expert. Dr. Mullan works with people who are struggling with chronic disease or other significant illness, who are willing to use diet and genetics-based nutritional supplementation, and who want to increase wellbeing and energy, enhance immunity, lift mood, fine-tune genetic function, and get their lives back. Dr. Mullan has studied at a number of exceptional institutions: the University of Pennsylvania, Tufts University School of Medicine, and the University of Chicago Hospitals and Clinics. She excels at integrating the results of biochemical and genetic testing into sustained clinical improvement for you. She has succeeded with patients who confounded the specialists at Massachusetts General Hospital, the Mayo Clinic, the Cleveland Clinic, Stanford, and many well-known integrative medical doctors. When recommending her, her patients say, “This is the woman you need to talk to. She really knows how to handle tough clinical problems.” Dr. Mullan's specialty areas are MTHFR+, methylation genetics, and genetics-based nutritional supplementation. Within this context, she most often works with Chronic Fatigue Syndrome, Lyme Disease, Psychiatric Disorders, Autism Spectrum Disorders, Women’s Health Issues, Thyroid Disorder, Gastrointestinal Disorder, and Heavy Metal Toxicity.

Getting the Most Out of Neurotransmitter Testing

Neurotransmitters function in your brain and body in ways that define your personality and your physical abilities. They are the chemicals that move your muscles and generate the feelings that you have, among many other functions. Their importance cannot be … Continue reading

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MTHFR A1298C, Neurotransmitter Production, and Depression

MTHFR A1298C works in an entirely different way from MTHFR C677T or MTHFR 03. It performs a regulatory function. It regulates the amount of SAMe, S-adenosyl methionine that is produced. SAMe is your body’s main methyl group supplier. It is necessary to have not too many and not too few methyl groups. Their production is strictly regulated. Continue reading

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MTHFR Mutations, Depression, and Other Chronic Illness

What would happen if all the traffic lights in your county started to malfunction at the same time? Say they all came on and stayed on. Or they all went dark. Even lesser degrees of malfunction, delays in lights’ changing … Continue reading

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An Exploratory Conversation with Dr. Mullan. What’s in It for You?

I have been working to find a way to balance the current economy against the very effective but relatively complicated and costly protocol that I do.  Despite Dr. Amy Yasko’s and my knocking ourselves out to make it simple, it … Continue reading

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Folate – What’s in It for You?

Folic acid deficiency results in the inability to degrade formiminoglutamic acid (FIGLU). As a result, FIGLU accumulates in your urine. High FIGLU on an organic acid test is a marker for low folate. It is important to use both folic … Continue reading

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Of Mice and Men…Inheriting Epigenetic Changes

The intracellular environment surrounding your DNA can either help repair problems in your DNA structure, or make those problems worse. This happens because of ‘epigenetic’ changes, changes in the expression of the gene because of what is ‘epi’ or around … Continue reading

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“I’d rather try to change someone’s religion than his diet.” Sidney Baker, MD

Every time I tell the average person that it is necessary to eat organic, I cringe a little. I know that it automatically puts me in the same category as a wacked-out nut. They think about all the restaurants that are … Continue reading

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