Studies suggest that these injections may lower homocysteine levels, a substance that can increase the risk of heart disease
Vitamin B12 injections deliver the nutrient directly into the bloodstream, completely bypassing the digestive system
But different products have different amounts
However, it can be found in foods like fish, eggs, meat and dairy products
Their primary benefit is that they provide a boost of energy and prevent fatigue, improving overall cognitive functioning including memory, and cognitive performance, and even helping with weight loss
Methods We searched four electronic databases (PubMed, Scopus, Web of Science, and Cochrane CENTRAL Register of Controlled Trials)