Causes of Vitamin B12 Deficiency There are several reasons why an individual might become deficient in vitamin B12: Poor Absorption Some people have difficulty absorbing vitamin B12 from food or supplements due to factors such as age or certain digestive disorders
These patients may experience a blunted or impeded response to the intranasal medication
Our bodies can become stressed when were ill, responding to a bad virus or bout of strep throat the same way they would if we experienced a death in the family (i.e., too much cortisol, not enough ovulation-inducing hormones)
aggressive iron repletion is now first-line therapy when ferritin is below 75 ng/mL Cold hands and feet poor peripheral circulation and impaired thyroid hormone conversion Dizziness or lightheadedness on standing Headaches , especially in the morning Brain fog and difficulty concentrating Shortness of breath with mild exertion Exercise intolerance slower recovery, higher heart rate at submaximal effort Pica unusual cravings for ice (pagophagia), starch, dirt, or paper
NICE Guideline CG189 (Obesity: identification, assessment and management) emphasises the importance of structured postoperative follow-up and ongoing medical management after bariatric surgery, including regular review of medications in the context of the patient's evolving clinical needs