Tiredness that sleep doesn't fix, tingling hands, forgetting things you used to remember. Many people put it down to stress or age, but sometimes the explanation is a vitamin: B12. Low levels are common in certain groups, a simple blood test detects them and, when treated early, the effects usually reverse.
Why does your body need B12?
The body can't make it: it has to come from animal products, fortified foods or supplements. The National Institutes of Health (NIH) put an adult's daily need at about 2.4 micrograms. With that, it handles several jobs:
- Making red blood cells. Without enough, a type of anemia appears, with large, poorly working cells.
- Protecting nerves. A long-lasting shortage can damage them and cause tingling or numbness.
- Supporting the mind. Memory, attention and mood depend partly on it.
To be clear: if your levels are already normal, more B12 won't give you extra energy. It is for correcting or preventing a deficiency, which is why it is measured first with a blood test.
How can you tell it's low?
Symptoms creep in slowly and it's easy to get used to them:
- Ongoing fatigue and weakness.
- Tingling, numbness or clumsiness in the hands and feet.
- Pale skin.
- A red, smooth or sore tongue.
- Memory lapses and trouble concentrating.
- Low mood or irritability for no clear reason.
- Shortness of breath or palpitations with little effort.
Who is more likely to be deficient?
- Adults over 50, because stomach acid, which helps absorb it, drops with age.
- People who have taken omeprazole or other heartburn medications for a long time.
- Patients on metformin for diabetes; it's worth checking now and then.
- People on a strict vegetarian or vegan diet.
- People who have had stomach or bowel surgery, including weight-loss surgery.
Where is it found in food?
Liver and clams are very rich in it; salmon, tuna and beef provide a good amount; milk, yogurt, cheese and eggs somewhat less. Some cereals and plant-based drinks are fortified: check the label. The NIH table lists how much each food contains.
That said, if your body doesn't absorb it well, diet isn't enough: you can eat everything and still run low.
Injection or pills?
When intestinal absorption is normal and the shortage is mild, pills usually work, including for maintenance. An intramuscular injection reaches the blood without going through the gut, so it is preferred when the deficiency is significant, there are nerve symptoms or there is an absorption problem.
At the clinic we give vitamin B12 injections and offer vitamin IV therapy with hydration. If the blood test points to another cause of fatigue, such as the thyroid, iron-deficiency anemia or a chronic condition, we treat that too.
How often is the shot given?
There is no single schedule. Often treatment starts with closer doses to rebuild your stores and then spreads them out to keep them up. The medical team sets the plan with your results in hand, not by guesswork.
Why do it with us
- The whole process in Spanish, from the moment you arrive.
- No appointment needed, seven days a week.
- Affordable prices, no insurance required.
- Sample collection at the same clinic.
- Close to you in southeast Houston: Glenbrook Valley, Park Place, Gulfgate, Pecan Park, Golfcrest, the Hobby area and South Houston.
Check your B12
Finding out is simple: the blood draw takes a few minutes. See our current promotions, which include a general blood panel with a vitamin B12 injection. Call (832) 831-4016 or walk in at 7640 Bellfort Ave Ste A, Houston, TX 77061, Monday through Sunday from 9:00 AM to 9:00 PM.
