Clinical Consequence Simulator
From gene regulation to biomarker, symptom and possible intervention — explained for everyone.
Your body has trouble using folate and B12 to keep an internal 'switching system' (methylation) running. That system helps clean the blood, build neurotransmitters, repair DNA and calm inflammation.
Imagine a factory that needs a special 'methyl' stamp to release its products. Low MTHFR/MTR activity means fewer stamps — so homocysteine waste piles up and important reactions slow down.
The genes that turn folate into the active form (5-MTHF) work more slowly. Less raw material reaches the methylation cycle.
Clinical: Reduced one-carbon flux
Methylation is how your cells label DNA, hormones and neurotransmitters. Homocysteine is a by-product that must be recycled — when recycling fails, it builds up.
Clinical: Methylation and homocysteine recycling
A blood test may show high homocysteine (ideally below 7-8 µmol/L). Low B12 or low folate often appear together.
Clinical: Homocysteine may rise; SAM:SAH may drop
You might feel tired even after sleeping, foggy when concentrating, anxious or down, and notice cold hands or higher cardiovascular risk over time.
Clinical: Fatigue, brain fog, vascular stress, mood changes
Eat leafy greens, eggs, liver and legumes. A clinician may recommend active folate (5-MTHF), methyl-B12, riboflavin and choline — always titrated to symptoms and lab work.
Clinical: Folate, B12, B2, TMG, choline, magnesium — guided by labs
- •Homocysteine above 10 µmol/L on repeat testing
- •Family history of early stroke, miscarriage or clots
- •Severe fatigue, numbness or memory loss
- •Limit alcohol — it depletes folate and B-vitamins
- •Reduce ultra-processed foods and added sugar
- •Sleep 7-9 h; chronic stress drains methyl groups