unexplained vision changes should be evaluated by a healthcare professional.
10. Digestive Problems
B12 deficiency may be associated with digestive symptoms such as loss of appetite, nausea, diarrhea, constipation, or an upset stomach.
11. Heart Palpitations
B12-deficiency anemia can sometimes cause a rapid heartbeat or heart palpitations because the heart has to work harder to deliver enough oxygen to the body.
Who Is at Risk for Vitamin B12 Deficiency?
- Older adults: B12 absorption can decrease with age.
- Vegans and some vegetarians: Vitamin B12 occurs naturally mainly in animal-derived foods, although
