Strict Vegan Diet Triggers Subacute Combined Degeneration of the Spinal Cord in Hangzhou Patient
A 42-year-old woman in Hangzhou developed subacute combined degeneration of the spinal cord after following an extreme vegan diet for three consecutive years, hk01.com reported. The patient consumed only vegetables, grains, beans, and mushrooms while completely avoiding meat, dairy, and eggs in an effort to pursue body detoxification and wellness.
Vitamin B12 Deficiency Causes Rapid Neurological Decline
Medical examinations revealed that the patient’s blood vitamin B12 concentration was severely depleted, confirming a diagnosis of subacute combined degeneration. The condition initially presented as numbness in both feet and a dull sense of touch, quickly progressing to leg weakness where walking felt like stepping on cotton. Nighttime brought sharp, sleep-disrupting foot pain. As the illness advanced, hand weakness set in, making daily tasks like holding a water cup or buttoning clothes exceedingly difficult. The medical team at the hospital noted that the patient faces the risk of permanent neurological sequelae and long-term disability because deep nerve tissue damage has already occurred, though nutritional supplementation and treatments are underway.
Why Animal-Source Nutrients Matter for Nerve Repair
Vitamin B12 remains essential for maintaining a healthy nervous system, driving nerve signal transmission, and repairing nerve damage. Natural sources of the vitamin exist almost exclusively in animal products such as meat, seafood, eggs, and milk. Even individuals maintaining lacto-ovo vegetarian diets struggle to get sufficient active vitamin B12 from plants alone. Prolonged strict veganism steadily depletes the body’s stored reserves until neurological symptoms emerge. Micronutrient deficiencies in iron and zinc frequently accompany these diets, compounding overall neurological stress.
Medical Recommendations for Safe Plant-Based Diets
Physicians outlined four preventive measures for individuals who choose to maintain a vegetarian lifestyle. First, prioritizing a lacto-ovo vegetarian approach incorporates eggs, milk, and yogurt to lower the risk of nerve injury. Second, individuals should follow professional medical guidance to take regular vitamin B12 supplements. Third, routine health screenings must include blood tests for vitamin B12 levels to catch deficiencies early. Fourth, a diversified diet incorporating grains, nuts, whole grains, dark vegetables, and quality soy products helps prevent severe nutritional imbalances.
Frequently Asked Questions About Veganism and Vitamin B12 Deficiency
What are the earliest warning signs of vitamin B12 deficiency in the nervous system?
Early symptoms typically include numbness in the feet, a dull sense of touch, and progressive weakness in the legs. Patients often describe the sensation of walking as if their feet are stepping on cotton.
Can a vegan get enough vitamin B12 from plant foods alone?
Natural, active vitamin B12 is found almost exclusively in animal-derived foods such as meat, seafood, eggs, and dairy. Plant-based foods do not provide adequate amounts, meaning strict vegans rely entirely on body stores until they are depleted.
What treatments are available once spinal cord degeneration occurs?
Treatment involves immediate nutritional supplementation and targeted medical therapies to restore vitamin B12 levels. However, if nerve tissue damage is severe, patients may experience long-lasting or permanent neurological sequelae.