Signs and Symptoms of Vitamin B12 Deficiency Early symptoms: Weakness and fatigue Pale skin Headaches Mild mood changes Intermediate symptoms: Tingling or numbness in hands and feet Breathlessness Heart palpitations Mouth ulcers or a red, swollen tongue (early to intermediate signs) Advanced symptoms: Memory problems Depression, anxiety, mood swings Poor balance or coordination Weight loss, poor appetite Constipation or loose motions Visual disturbances In some cases, long-term deficiency can cause permanent nerve damage , so early detection is key
It is unknown whether GLP-1 receptor agonists are associated with thyroid C-cell tumors, including MTC in humans
Individuals with gastrointestinal disorders like celiac disease, Crohn's disease, or surgical alterations in the gastrointestinal tract may also experience impaired B12 absorption
(Berl), 95 (3):323-333
PubMed , Current Pharmaceutical Design , vol
How often should you get a B12 shot for weight loss