This prevents over-ordering and reduces the risk of medications expiring before use
For that reason, and to support a reduction in harmful farming practices for the climate, I chose to become vegetarian for a year in 2011, then pescetarian, then flexitarian for about 6 years
This includes confirmed low serum vitamin B12 levels, pernicious anaemia, malabsorption states such as coeliac disease, inflammatory bowel disease, or post-gastric or bariatric surgery, unexplained anaemia, neuropathy or neurological symptoms consistent with vitamin B12 deficiency, a long-term vegan diet with symptoms or low levels, or failure of oral vitamin B12 supplementation
On the physical side, you might notice constant tiredness that doesn't improve with rest, heavy legs during workouts, shortness of breath on efforts that shouldn't wind you, pale skin, and a need for frequent napping