Why is that so many people start to feel instantly better within a few hours of their first b12 shot and some feel worse or no difference at all during the first few shots?
Also people keep telling me 300ng/ml is not a level of deficiency. It's pretty good and I'm just thinking about all this.
Honestly I am not. I've never felt so bad since the last few months.
Written by
Shipra33
To view profiles and participate in discussions please or .
There isn't any easy answer to your question, B12 is used in a lot of processes that go on in your cells. Each of these processes is controlled by a number of genes and there will be a large number of different variants on those genes which means that each of those processes will run more or less efficiently depending on which variant a person has. That is basically saying that there are hundreds - probably thousands of variants at play which is why people can respond so differently to an individual environmental change - such as a B12 injection.
Was 300ng/ml the level before you had injections or a level after you had injections. a B12 injection introduces a variation (high serum B12) that means the normal range doesn't apply post loading shots.
If it is your current measure pre-shots then it illustrates a problem with the serum B12 test as a measure of B12 absorption. Individuals tend to have a point in the normal range where they are okay and that remains pretty static because of releasing stores of B12 in the liver. Serum B12 can be used to identify levels dropping over time - which is the main thing that will happen if you have an absorption problem (or a lack of B12 in your diet) but a single measure can't do that.
Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them.
Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked.