The Central Vitamin B6 Axis
INPUT
Dietary Vitamin B6
ACTIVATION
Conversion to the Active Form (PLP)
EFFECT
Essential for Neurotransmitters & Metabolism
The Key Players in the System
Essential Co-Factors
Zn Zinc
Mg Magnesium
Mn Manganese
Important Influencing Factors
🧬 Genetics (e.g., HLA-DQ2/8)
🦠 Microbiome & Gut Health
🧠 Chronic Stress
Diagnostic Patterns: Understanding Lab Values
Low PLP / Low Total B6
→ Intake Deficiency
Low PLP / High Total B6
→ Conversion Disorder
High PLP / High Total B6
→ Possible Oversupplementation
Typical Deficiency Symptoms of B Vitamins
B1 (Thiamine)
- Neurological disorders
- Memory loss, confusion
- Muscle weakness, cramps
- Cardiovascular problems
- Loss of appetite & weight loss
- Irritability, depression
- Numbness in limbs
- Fatigue, exhaustion
- Poor concentration
- Digestive problems
B2 (Riboflavin)
- Cracked corners of the mouth
- Sore, red tongue
- Skin rashes, dermatitis
- Light sensitivity, burning eyes
- Sore throat
- Anemia
- Fatigue, weakness
- Hair loss
- Growth problems
- Nerve damage
B3 (Niacin)
- Skin inflammation (pellagra)
- Diarrhea, digestive issues
- Dementia, confusion
- Depression, apathy
- Headaches, dizziness
- Insomnia
- Muscle weakness
- Loss of appetite
- Irritability
- Memory problems
B6 (Pyridoxine)
- Skin rashes, acne
- Anemia (microcytic)
- Depression, anxiety
- Confusion, irritability
- Weakened immune system
- Numbness in hands and feet
- Cracked lips and tongue
- Seizures, muscle twitching
- Fatigue
- Premenstrual syndrome (PMS)
B12 (Cobalamin)
- Megaloblastic anemia
- Extreme fatigue, weakness
- Nerve damage (tingling, numbness)
- Difficulty walking, balance problems
- Memory problems, dementia
- Depression, behavioral changes
- Sore tongue, mouth ulcers
- Vision problems
- Shortness of breath, heart palpitations
- Pale or jaundiced skin
The Prioritized Treatment Path
Replenish Co-Factors
First, correct Zinc, Manganese & Magnesium.
Choose the Right B6 Form
Based on the lab pattern (PLP or PN-HCl).
Support Gut Health
Stabilize gut barrier and microbiome.