Neurological Issues: Since vitamin B12 is essential for brain health and function, a deficiency may result in mental dullness, sometimes referred to as cognitive dysfunction, and in severe cases, a dog can have seizures
If that is you, it is understandably worrying, but in almost all cases it is short-lived and harmless
Any of these, alone or in combination, may explain a drop in stamina without pointing to a serious issue
However, if youre already getting enough vitamin B12 in your diet and dont have a nutrient deficiency, its unclear whether increasing your intake of vitamin B12 will have much of an effect on weight loss.
These nutrients are especially important for women who experience heavy periods