Folate

What This Marker Means

Folate is required for red blood cell production, DNA synthesis, and neurological function. Deficiency leads to fatigue, anemia, brain fog, and mood changes.

How Alcohol Affects This Marker

Alcohol reduces folate absorption and increases urinary excretion. Folate depletion is one of the most common nutrient deficiencies in frequent drinkers and significantly alters MCV.

How to Discuss With Your Doctor

If low or low-normal, ask your doctor whether supplementation is appropriate. Discuss symptoms such as fatigue or mood changes, and mention drinking patterns.