Vitamin B6 Deficiency
Assess whether you present clinical signs of vitamin B6 (pyridoxine) deficiency: hyperventilation, spasmophilia, muscle tension.
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Keeping your balance
Understanding B6 versatility
Vitamin B6 is the cofactor for more than 150 enzymes, a record among B vitamins. In its active form PLP (pyridoxal-5-phosphate), it intervenes in the metabolism of all amino acids, the synthesis of serotonin (5-HTP to 5-HT), dopamine (L-DOPA to dopamine), GABA (glutamate to GABA), and noradrenaline. It is also essential for heme synthesis (hemoglobin), zinc absorption, and the conversion of homocysteine to cystathionine. Your good score reflects a satisfactory status of these metabolic pathways.
Populations at risk of deficiency
B6 is the most widespread B vitamin deficiency. Women on oral contraceptives are particularly exposed because synthetic estrogens accelerate tryptophan catabolism and increase PLP requirements. Alcohol, chronic stress, medications (isoniazid, penicillamine, hydralazine), and aging are other depletion factors. Remain vigilant if you belong to one of these categories.
Preserving your B6 status
Regularly consume the richest sources of B6: pistachios (1.70 mg/100 g), fresh garlic (1.24 mg/100 g), tuna (0.93 mg/100 g), liver, poultry, and fatty fish. Plants such as bananas, chickpeas, and potatoes supplement intake. B6 is relatively stable with gentle cooking but sensitive to light and excessive heat. Store your foods away from light and prefer short cooking times.
What you can do
Pathophysiology of your situation
PLP is the cofactor for glutamate decarboxylase (enzyme that converts excitatory glutamate to inhibitory GABA), tryptophan hydroxylase, and aromatic amino acid decarboxylase (serotonin and dopamine synthesis). PLP deficiency causes an imbalance between excitatory neurotransmitters (glutamate) and inhibitory ones (GABA), explaining spasmophilia, muscle tension, and hyperventilation. B6 is also the cofactor for ALA synthase, the first enzyme of heme synthesis: deficiency causes sideroblastic anemia with elevated iron but low hemoglobin.
Clinical and biological markers
Clinical signs include spasmophilia of the hands (Trousseau sign), hyperventilation, chronic muscle tension, angular cheilitis (fissures at mouth corners), and glossitis (painful and smooth tongue). In laboratory testing, plasma PLP assay is the reference marker (normal threshold above 30 nmol/L, optimal above 50 nmol/L). Homocysteine is often elevated (B6 is a cofactor for cystathionine beta-synthase which converts homocysteine to cystathionine). An elevated urinary xanthurenic acid to kynurenic acid ratio after tryptophan loading is a highly specific functional test.
Priority food sources
Pistachio is the most concentrated source (1.70 mg/100 g), followed by fresh garlic (1.24 mg/100 g), tuna (0.93 mg/100 g), and calf liver (0.84 mg/100 g). Sunflower seeds (0.80 mg/100 g), salmon (0.64 mg/100 g), chicken (0.60 mg/100 g), and chickpeas (0.55 mg/100 g) are accessible daily sources. Walnuts (0.54 mg/100 g) and turkey (0.46 mg/100 g) supplement intake. Banana (0.37 mg/100 g) is a practical snack rich in B6 and tryptophan.
Targeted supplementation
P5P (pyridoxal-5-phosphate) is the active form of choice. Unlike standard pyridoxine (HCl), P5P does not require liver conversion and is directly usable by enzymes. This form is particularly indicated in people with slowed liver function or genetic polymorphisms affecting conversion enzymes. Take preferably in the morning at breakfast. Combine with magnesium bisglycinate which acts synergistically with B6 for GABA and muscle relaxation. Doses are set with your doctor or your naturopath, all the more so if you already take a medication.
Lifestyle adaptations
If you take oral contraception, B6 supplementation is almost essential because synthetic estrogens accelerate PLP degradation. Chronic stress increases demand for neurotransmitters and therefore B6. Adopt muscle relaxation techniques (stretching, yoga, warm Epsom salt baths) to relieve tension. Reduce alcohol which inhibits pyridoxine phosphorylation to active PLP. Regular sleep (7 to 8 hours) promotes neurotransmitter stock regeneration.
Plant-based support
Nettle (Urtica dioica) as an infusion or fluid extract is a leading remineralizing plant that promotes zinc and iron absorption, 2 minerals whose metabolism depends on B6. Rich in silica, it also supports skin and hair health. In case of marked spasmophilia, valerian (Valeriana officinalis) as tincture (bedtime) promotes GABA and neuromuscular relaxation. Passionflower (Passiflora incarnata) complements GABAergic action during the day without causing drowsiness. Add lemon balm (Melissa officinalis) as an infusion if digestive disturbances are present. Doses are set with your doctor or your naturopath, all the more so if you already take a medication.
What you can do
Understanding the severity of your situation
Severe PLP deficiency simultaneously compromises the synthesis of 4 major neurotransmitters (serotonin, dopamine, GABA, noradrenaline), hemoglobin formation (sideroblastic anemia), homocysteine detoxification (cardiovascular risk), zinc absorption, niacin synthesis from tryptophan, and amino acid metabolism. GABA, the brain’s primary inhibitory neurotransmitter, drops first because glutamate decarboxylase has low affinity for PLP. This explains the spasmophilia, cramps, and neuromuscular hyperexcitability that dominate your clinical picture.
Priority biological assessment
Request as a priority plasma PLP (pyridoxal-5-phosphate) assay, normal threshold above 30 nmol/L, optimal above 50 nmol/L, and homocysteine measurement, normal below 10 micromol/L, ideal below 7. Major clinical signs include hand spasmophilia (positive Trousseau sign), chronic hyperventilation, painful muscle tension, bilateral angular cheilitis, and atrophic glossitis. Complete with CBC (search for microcytic or sideroblastic anemia), serum iron and ferritin assay (paradoxically elevated in sideroblastic anemia), and liver function tests. The tryptophan loading test with urinary xanthurenic acid assay is the functional gold standard.
What goes on your plate
Integrate daily the most concentrated B6 sources: pistachios as a snack (1.70 mg/100 g), fresh garlic in all your dishes (1.24 mg/100 g), fatty fish 3 to 4 times per week (tuna 0.93 mg, salmon 0.64 mg). Calf liver (0.84 mg/100 g) 1 to 2 times per week provides concentrated B6 and iron. Chickpeas (homemade hummus), steamed potatoes, and bananas constitute reliable daily vegetable sources. Prefer gentle cooking methods as B6 is partially destroyed by high temperatures. Combine foods rich in zinc (oysters, pumpkin seeds) to compensate for absorption deficiency linked to B6 lack.
What you can add
Start with P5P (pyridoxal-5-phosphate), the active form requiring no liver conversion. This form is 3 to 5 times more bioavailable than standard pyridoxine HCl and suits people with genetic polymorphisms (ALPL, PNPO) affecting conversion. Imperative to combine with magnesium bisglycinate (in 2 doses): B6 and magnesium act synergistically for GABA synthesis and neuromuscular relaxation. Add zinc bisglycinate whose absorption depends on B6. A complete B complex (B2, B9, B12) supports the methylation pathway and homocysteine reconversion. Minimum duration: 3 months. Doses are set with your doctor or your naturopath, all the more so if you already take a medication.
Lifestyle reform
If you take oral contraception, discuss with your doctor a non-hormonal alternative or systematically combine B6 and magnesium supplementation. Stop or greatly reduce alcohol which blocks pyridoxine phosphorylation to active PLP via acetaldehyde. Chronic stress depletes neurotransmitter stocks and therefore B6: adopt heart rate variability training, yoga, and daily stretching. Warm Epsom salt baths (magnesium sulfate) relieve muscle tension through transcutaneous magnesium absorption. Sleep 7 to 8 hours to promote serotonin and GABA stock regeneration.
The plants that support
Nettle (Urtica dioica) is the first-choice plant: as a long infusion (30 minutes, 3 cups per day) or fluid extract, it provides overall remineralization (silica, iron, zinc, magnesium) compensating for absorption deficits linked to B6 lack. For spasmophilia and neuromuscular hyperexcitability, valerian (Valeriana officinalis) as fluid extract (morning and evening) potentiates residual GABA by inhibiting its degradation by GABA-transaminase. Passionflower (Passiflora incarnata, dry extract) reinforces GABAergic action during the day. Vitex (Vitex agnus-castus) is particularly indicated in women with premenstrual syndrome aggravated by B6 deficiency. Doses are set with your doctor or your naturopath, all the more so if you already take a medication.
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Related tests
This result is an educational naturopathic self-assessment. It is neither a diagnosis nor medical advice, and it does not replace a consultation. Only a health professional can confirm or rule out a disorder. If symptoms persist, or if you are pregnant, breastfeeding or on any treatment, talk to your doctor before taking any supplement or herbal preparation, and never stop a treatment without medical advice.
How to read this test
Assess whether you present clinical signs of vitamin B6 (pyridoxine) deficiency: hyperventilation, spasmophilia, muscle tension. Free, 5 questions.
Vitamin B6, or pyridoxine, is a cofactor for more than 150 enzymatic reactions. It is essential for neurotransmitter synthesis (serotonin, dopamine, GABA), homocysteine metabolism, and hemoglobin formation. B6 deficiency manifests through neuromuscular disorders (spasmophilia, tetany) and oral lesions. This questionnaire is particularly relevant for women using oral contraception, who have increased pyridoxine requirements, as well as for people suffering from premenstrual syndrome.
Strengths
- Rapid identification of clinical signs
- Simple self-assessment test
- Detection of neuromuscular and oral signs linked to pyridoxine deficiency
Limitations
- Does not replace blood testing
- Some signs may have other causes
- Limited sensitivity for subclinical deficiencies