Groups at increased risk of B12 deficiency include: Vegans and strict vegetarians , who avoid all animal products and are at significant risk without supplementation or fortified foods Older adults , in whom reduced stomach acid production impairs B12 absorption People with pernicious anaemia , an autoimmune condition that destroys intrinsic factor-producing cells Those who have undergone gastric surgery , including bariatric procedures, which can reduce intrinsic factor availability Individuals taking long-term metformin for type 2 diabetes, as this medication is associated with reduced B12 absorption the MHRA has issued specific safety advice on monitoring B12 levels in this group [6] [7] People with conditions affecting the small intestine , such as Crohn's disease or coeliac disease Symptoms of B12 deficiency can include fatigue, weakness, pins and needles, memory difficulties, and a sore or inflamed tongue (glossitis)

In aged mice, it nearly doubles muscle fiber size and enhances muscle stem cell proliferation, resulting in superior muscle regeneration post-injury 1
Semaglutide can bring a renewed sense of hope, especially for individuals who have struggled with weight management in the past
Skip heavy drinking, as alcohol messes with B12 uptake in your gut, leaving you short even with a solid diet
"A lot of people will swear by it and it's OK, but there's not a study that it gives you an energy boost