If you are B12 deficient, your body may struggle fighting off pathogens which may make you more susceptible to viruses
In most cases, people get enough vitamin B12 and other nutrients from their diet
Our experience shows that starting on the lower end of the spectrum is almost always the wisest approach
For example, in the FY 2021 IPPS final rule we stated that we believe the rates that hospitals negotiate with MAOs capture the relative resource use to provide services to patients in order to maximize profits (or, in the case of not-for-profit hospitals, net income), subject to market constraints and conditions (supply and demand, community benefit requirements, etc.)
Hepatology 59 , 17611771 (2014)
The effect is more of a steady return to feeling your best, rather than an immediate, artificial jolt