Why am I deficient in B12?
While you may be getting enough vitamin B12 through your diet, your body may not be able to absorb it, which could be one of the reasons you are deficient.
Ms Cox said: “It’s not necessarily that you don’t get enough vitamin B12 through your diet.
“It depends on how much you absorb. Absorption can be a challenge for some people, especially those with chronic digestive conditions such as irritable bowel syndrome, celiac disease or lack of heartburn.
“We need a high level of heartburn to absorb vitamin B12, which many older people lack.