No, masturbation does not cause vitamin B12 deficiency.
There is no medical evidence linking masturbation to vitamin B12 deficiency. This is a myth without any scientific basis.
Actual Causes of Vitamin B12 Deficiency
Based on the most recent NICE guidelines from 2024, vitamin B12 deficiency occurs due to well-established medical causes 1:
Dietary Causes
- Vegan or strict vegetarian diets that exclude animal-source foods
- Diets low in B12-fortified foods
- Food allergies (eggs, milk, fish)
- Eating disorders or restricted diets
- Inability to afford or prepare B12-rich foods
Malabsorption Conditions
- Atrophic gastritis affecting the gastric body
- Pernicious anemia (autoimmune condition)
- Celiac disease
- Inflammatory bowel disease
- Pancreatic insufficiency
- Helicobacter pylori infection 2, 3
- Post-bariatric surgery or gastrectomy 3
Medications That Cause B12 Deficiency
The following medications are documented causes 1:
- Metformin
- Proton pump inhibitors (PPIs)
- H2 receptor antagonists
- Colchicine
- Phenobarbital
- Pregabalin
- Primidone
Other Risk Factors
- Age over 60 (food-bound cobalamin malabsorption) 2
- Family history of B12 deficiency or autoimmune conditions
- Other autoimmune conditions (thyroid disease, Sjögren syndrome, type 1 diabetes)
Clinical Presentation
If you're concerned about B12 deficiency, look for these actual symptoms 1, 4:
- Unexplained fatigue
- Cognitive difficulties ("brain fog")
- Peripheral neuropathy (pins and needles, numbness)
- Balance problems and falls
- Anemia or macrocytosis on blood count
- Glossitis
- Visual disturbances
When to Test
Testing is appropriate when you have at least one risk factor AND one clinical feature of B12 deficiency 4. First-line testing uses either total serum B12 or active B12 (holotranscobalamin) 1, 5.
Common pitfall: Don't attribute vague symptoms like fatigue to unrelated behaviors. Focus on documented medical causes when evaluating B12 deficiency.