B12 levels still low after taking supplements? The real problem may be what’s stopping the body from absorbing it

B12 deficiency keeps returning? What could be stopping your body from absorbing it

Vitamin B12 is treated like a simple numbers game: a low report leads to a supplement, and the expectation is that the level will rise. But the body does not absorb B12 in just one step. So, when levels remain low despite supplementation, the bigger question may be whether the vitamin is reaching the bloodstream properly in the first place.

​B12 has to pass through a complicated route

B12 naturally found in food is attached to protein. Stomach acid helps release it, after which the vitamin binds to intrinsic factor, a protein made in the stomach. The B12-intrinsic factor complex is then absorbed in the last part of the small intestine.

That explains why someone can eat enough B12 and still become deficient. Atrophic gastritis, pernicious anaemia, coeliac disease, Crohn’s disease and some stomach or intestinal surgeries can interfere with absorption.

Supplements work differently, but they are not magic

 

B12 in supplements is already in a free form, so it does not need stomach acid to release it from food protein. It still needs intrinsic factor for the main absorption pathway. At very high oral doses, a small amount can also enter through passive absorption, which is one reason high-dose oral B12 can sometimes work even when absorption is impaired.

There is also no strong evidence that methylcobalamin supplements are absorbed better than cyanocobalamin. The form alone should not be treated as the answer to persistent deficiency.

 

Food still matters, especially when B12 intake is low

 

Fish, meat, eggs and dairy provide naturally occurring B12. For people who eat little or no animal food, fortified foods and supplements become particularly important because plant foods do not naturally provide reliable B12.

India’s ICMR-NIN 2020 RDA lists 2.2 micrograms of B12 a day for adults.

The practical point is not to chase bigger doses blindly. A persistent low level deserves an explanation.

 

Some everyday medicines can be part of the puzzle

Long-term use of metformin can reduce B12 absorption and lower blood B12 concentrations. Acid-reducing medicines, including proton-pump inhibitors, can also interfere with absorption of food-bound B12 because stomach acid helps release the vitamin from food.

That does not mean stopping prescribed medicines. It means persistent B12 deficiency should be discussed in the context of the medicines being taken.

 

When low B12 needs a closer look

A blood B12 result is useful, but it does not always tell the whole story. The NIH notes that methylmalonic acid (MMA) is a more sensitive marker of B12 status and can help clarify deficiency when serum B12 falls into a borderline range.

Numbness, tingling, balance problems, weakness or cognitive changes also deserve attention because B12 deficiency can affect the nervous system even without obvious anaemia.

So the better question is not simply, “Which B12 supplement is strongest?” It is: “Why is the body not maintaining B12?”

 

 

 

 

This is only for your information, kindly take the advice of your doctor for food, medicines, exercises and so on.   

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We Asked a Dietitian If You Need Protein at Every Meal

Key Takeaways

• It is important to have protein at every meal because the body does not absorb it well when consumed all at once.
• You don’t need to exceed the amount of protein that your body needs.
• Try to get protein from a variety of sources, including fish, poultry, meat, eggs, dairy, beans, nuts, seeds, peas, and lentils.

 

The newly released Dietary Guidelines for Americans place a stronger focus on protein than previous editions. The new guidance recommends consuming 1.2 to 1.6 grams of protein per kilogram of body weight per day, about double the prior recommended amount.1

To better understand what these recommendations mean for everyday eating, we spoke with  a Detroit-based registered dietitian and spokesperson for the Academy of Nutrition and Dietetics.

*This interview has been edited and condensed for length and clarity.

Q: The new Dietary Guidelines recommend having protein at every meal, preferably with “high-quality, nutrient-dense” animal and plant sources. Do we really need protein at every meal?

Derocha: When it comes to protein, if you’re not getting enough, you should try to consume more. However, there’s really no need to exceed the amount that your body needs.

Try to get protein from a variety of sources, such as fish, poultry, meat, eggs, and dairy, which are highlighted at the top of the new inverted pyramid. You should also get protein from beans, nuts, seeds, peas, and lentils.

It is important to have protein at every meal because it is not as well absorbed when consumed all at once. While protein is an important part of our meals, having it on your plate does not mean you should exclude other nutritious foods.

The amount of protein you actually need depends on many factors, like your age, lifestyle, chronic conditions, and family history. Work with a registered dietitian or healthcare provider to determine the right protein targets for your individual needs and goals.

Q: The emphasis on protein also raises questions about specific foods highlighted in the new guidance. Can you talk more about that?

Derocha: One of the concerns about the new pyramid is the emphasis on butter, beef tallow, red meat, and full-fat dairy. That seems inconsistent with the guideline’s recommendation to limit saturated fats to 10 percent of your calories. I think this may lead to confusion for some people.

Evidence consistently shows that replacing saturated fats with unsaturated fats, especially polyunsaturated fats from plant sources, can reduce cholesterol and cardiovascular disease. 

 

Q: How can people follow a healthy diet that’s realistic and sustainable?

Derocha: Although some of the new recommendations are confusing, some of the core principles align with long-standing nutrition science—eating more fruits and vegetables, incorporating whole grains, emphasizing fiber and microbiome health, limiting ultraprocessed foods, watching foods that are high in sugar and sodium, prioritizing healthier fats, and limiting saturated fats to no more than 10% of total calories.

A lot of times it is just harder to create consistent healthy habits rather than knowing what we should eat. We know the average American does not get enough produce or fiber. There are definitely things we know that we’re not getting enough of that we could incorporate into a healthy diet—it doesn’t necessarily have to include red meat.

I want people to start feeling empowered in their process, rather than feeling like they’re doing something bad or not eating the “perfect” diet.

I recommend people spend time thinking about what foods they like, what foods are available to them, and what the science says. I bought some meat the other day, and it was expensive. So keep those factors in check and consult a few science- and evidence-based resources to find the best balance for what you enjoy eating, what culturally and traditionally makes sense to you, and what’s affordable, accessible, and approachable as you develop a nutritious meal plan.

 

 

This is only for your information, kindly take the advice of your doctor for food, medicines, exercises and so on.   

https://gscrochetdesigns.blogspot.com. one can see my crochet creations  

https://gseasyrecipes.blogspot.com. feel free to view for easy, simple and healthy recipes    

https://kneereplacement-stickclub.blogspot.com. for info on knee replacement

https://GSiyers home remedies.blogspot.com   is the latest addition to my blogs