What happens if your B12 is too high?

High doses of vitamin B-12, such as those used to treat a deficiency, might cause: Headache. Nausea and vomiting. Diarrhea.

mayoclinic.org - Vitamin B-12 - Mayo Clinic

How do you get rid of midriff bulge?

Rédaction Supersmart. 1) A varied, balanced diet is key to achieving shapely curves. ... 2) Eat slowly to promote satiety. ... 3) Restrict foods...

Last updated Feb 1, 2018

Does drinking water help in weight loss?

Water can be really helpful for weight loss. It is 100% calorie-free, helps you burn more calories and may even suppress your appetite if consumed...

Last updated May 4, 2020

Promotion

Overview

Vitamin B-12 (cobalamin) plays an essential role in red blood cell formation, cell metabolism, nerve function and the production of DNA, the molecules inside cells that carry genetic information. Food sources of vitamin B-12 include poultry, meat, fish and dairy products. Vitamin B-12 is also added to some foods, such as fortified breakfast cereals, and is available as an oral supplement. Vitamin B-12 injections or nasal spray might be prescribed to treat vitamin B-12 deficiency. Vitamin B-12 deficiency is not common in the U.S. However, people who follow a vegetarian or vegan diet might be prone to deficiency because plant foods don't contain vitamin B-12. Older adults and people with digestive tract conditions that affect absorption of nutrients also are susceptible to vitamin B-12 deficiency. Left untreated, a vitamin B-12 deficiency can lead to anemia, fatigue, muscle weakness, intestinal problems, nerve damage and mood disturbances.

The recommended daily amount of vitamin B-12 for adults is 2.4 micrograms.

Evidence

Research on the use of vitamin B-12 for specific activities and conditions shows: Heart and blood vessel disease. Researchers had previously believed that vitamin B-12, when combined with folic acid (vitamin B-9) and vitamin B-6, might prevent diseases of the heart and blood vessels by reducing the levels of an amino acid in the blood (homocysteine). However, studies show that the combination of these vitamins doesn't seem to reduce the risk or severity of cardiovascular disease and stroke. Researchers had previously believed that vitamin B-12, when combined with folic acid (vitamin B-9) and vitamin B-6, might prevent diseases of the heart and blood vessels by reducing the levels of an amino acid in the blood (homocysteine). However, studies show that the combination of these vitamins doesn't seem to reduce the risk or severity of cardiovascular disease and stroke. Dementia. Vitamin B-12 deficiency is associated with dementia and low cognitive function, but it's not clear whether vitamin B-12 supplements might help prevent or treat dementia. Vitamin B-12 deficiency is associated with dementia and low cognitive function, but it's not clear whether vitamin B-12 supplements might help prevent or treat dementia. Athletic performance. Unless you have a vitamin B-12 deficiency, there's no evidence that vitamin B-12 supplements will boost your energy or make you a better athlete.

Are bananas good for belly fat?

4. Bananas: Though high in calories, bananas are a great flat belly fruit. Bananas are rich in healthy fibers that help curb appetite and make the...

Last updated Apr 23, 2019

What helps speed up fat burning?

12 Ways to Promote Long-Term Fat Loss Start strength training. ... Follow a high protein diet. ... Get more sleep. ... Eat more healthy fats. ......

Last updated Jun 17, 2020

Promotion

Our take

Generally safe

Most people get enough vitamin B-12 from a balanced diet. However, older adults, vegetarians, vegans and people who have conditions that affect their ability to absorb vitamin B-12 from foods might benefit from the use of oral supplements. Vitamin B-12 supplements also are recommended for women who are pregnant or breastfeeding exclusively and follow vegetarian or vegan diets.

Safety and side effects

When taken at appropriate doses, vitamin B-12 supplements are generally considered safe. While the recommended daily amount of vitamin B-12 for adults is 2.4 micrograms, higher doses have been found to be safe. Your body absorbs only as much as it needs, and any excess passes through your urine. High doses of vitamin B-12, such as those used to treat a deficiency, might cause:

Headache

Nausea and vomiting

Diarrhea

Fatigue or weakness

Tingling sensation in hands and feet

Interactions

Possible interactions include:

Aminosalicylic acid (Paser). Taking this drug used to treat digestive problems might reduce your body's ability to absorb vitamin B-12. Taking this drug used to treat digestive problems might reduce your body's ability to absorb vitamin B-12. Colchicine (Colcrys, Mitigare, Gloperba). Taking this anti-inflammatory drug used to prevent and treat gout attacks might decrease your body's ability to absorb vitamin B-12. Taking this anti-inflammatory drug used to prevent and treat gout attacks might decrease your body's ability to absorb vitamin B-12. Metformin (Glumetza, Fortamet, others). Taking this diabetes drug might reduce your body's ability to absorb vitamin B-12. Taking this diabetes drug might reduce your body's ability to absorb vitamin B-12. Proton pump inhibitors. Taking omeprazole (Prilosec), lansoprazole (Prevacid) or other stomach acid-reducing drugs might decrease your body's ability to absorb vitamin B-12. Taking omeprazole (Prilosec), lansoprazole (Prevacid) or other stomach acid-reducing drugs might decrease your body's ability to absorb vitamin B-12. Vitamin C (ascorbic acid) supplements. Taking vitamin B-12 with vitamin C might reduce the available amount of vitamin B-12 in your body. To avoid this interaction, take vitamin C two or more hours after taking a vitamin B-12 supplement.

What is good source of protein?

Animal-based foods (meat, poultry, fish, eggs, and dairy foods) tend to be good sources of complete protein, while plant-based foods (fruits,...

Last updated Jun 24, 2018

Will I gain weight after stopping bupropion?

However, one antidepressant, bupropion (also known as Wellbutrin) seems to have the opposite effect. Weight is often lost while on the drug, and...

Last updated Feb 21, 2021

Promotion

Your doctor might recommend changing drugs or timing doses to offset any potential interactions. There is a problem with information submitted for this request. Review/update the information highlighted below and resubmit the form. From Mayo Clinic to your inbox Sign up for free, and stay up to date on research advancements, health tips and current health topics, like COVID-19, plus expertise on managing health. Email ErrorEmail field is required ErrorInclude a valid email address Learn more about Mayo Clinic’s use of data. To provide you with the most relevant and helpful information, and understand which information is beneficial, we may combine your email and website usage information with other information we have about you. If you are a Mayo Clinic patient, this could include protected health information. If we combine this information with your protected health information, we will treat all of that information as protected health information and will only use or disclose that information as set forth in our notice of privacy practices. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail. Subscribe! Thank you for subscribing! You'll soon start receiving the latest Mayo Clinic health information you requested in your inbox. Sorry something went wrong with your subscription Please, try again in a couple of minutes Retry

mayoclinic.org - Vitamin B-12 - Mayo Clinic

Is weight loss hard with type 2 diabetes?

Dear R.P.: It can be harder to lose weight with Type 2 diabetes. The underlying defect is resistance to insulin, so blood insulin levels usually...

Last updated May 17, 2021

How can I reactivate my collagen naturally?

Eating foods rich in vitamin C and amino acids can increase the levels of hyaluronic acid and collagen in the body as both are important for skin....

Last updated Oct 23, 2019

Promotion

Which fruits burn fat naturally?

Here are some fruits that are known to cut belly fat: Apple. Fresh and crunchy apples are packed with healthy flavonoids and fibres that may help...

Last updated May 20, 2020

Learn More »

Promotion

How do you know if detox is working?

The signs your body is detoxing occur quite rapidly after stopping the substance — sometimes within hours. ... Here are the signs to be aware of:...

Last updated May 11, 2018