10.1073/pnas.0510996103 149 SedlakT
Circulation 126 , 22832292 (2012)
Causes Dietary deficiency strict vegetarian or vegan diet Pernicious anemia autoimmune destruction of stomach cells that absorb B12 Malabsorption disorders celiac disease, Crohns disease, atrophic gastritis Medications long-term use of proton pump inhibitors, metformin Surgical removal of stomach or intestines reduces absorption Signs and Symptoms Fatigue and weakness Pale or jaundiced skin Tingling or numbness in hands and feet (neuropathy) Difficulty walking or balance problems Memory loss, confusion, or mood changes Glossitis swollen, red tongue Shortness of breath, dizziness Complications (if untreated) Permanent nerve damage tingling, numbness, or difficulty walking Megaloblastic anemia large, immature red blood cells Cognitive decline or dementia in severe cases Diagnosis Blood tests low B12 levels, high homocysteine and methylmalonic acid Complete blood count (CBC) shows anemia Intrinsic factor antibodies if pernicious anemia is suspected Treatment Vitamin B12 supplementation: Oral B12 tablets for mild deficiency Intramuscular B12 injections for severe deficiency or absorption problems Dietary sources: Meat, fish, poultry, eggs, dairy products Fortified cereals or plant-based milk for vegetarians Vitamin B12 deficiency can cause anemia and nerve damage
While much of this market is driven by cancer and metabolic disease therapies, the off-label clinical use of peptides for mens health and anti-aging has gained momentum in urban centers like NYC, particularly among working professionals aged 3555 seeking edge-enhancement therapies
Safety, tolerability, pharmacokinetics, and clinical outcomes following treatment of painful knee osteoarthritis with senolytic molecule UBX0101
