Folic acid and B12 supplementation was associated with a 21% increased risk for cancer, a 38% increased risk for dying from the disease, and an 18% increase in deaths from all causes. This finding was mainly driven by an increase in lung cancer incidence among the folic acid and B12-treated patients.
Is cancer a deficiency of vitamin B12?
Vitamin-B12 is an essential nutrient for making DNA and keeping the nerve and blood cells healthy. However, different studies suggest that long term use of high dose Vitamin-B12 can be harmful and can increase the risk of certain cancers like lung cancer and colorectal/colon cancer.
What cancers are associated with high B12 levels?
Other studies focusing on specific cancers have shown a strong association between elevated B12 levels and liver cancers (OR 3.3 [95%CI: 1.1–10.4] for hepatocellular carcinomas and OR 4.7 [95%CI: 1.2–17.9] for other liver cancers) , a moderate association with prostate cancer (OR 1.1 [95%CI: 1.0–1.2]) , and no …
Does B12 cause tumors?
It does not suggest that B12 supplementation can cause cancer.
Should I be worried if my B12 is high?
There is no upper limit for vitamin B-12 intake because consuming high levels does not cause problems. However, having naturally high levels of vitamin B-12 in the body may be a cause for concern, as it suggests a severe underlying condition.
What is the side effects of low vitamin B12?
If you have anaemia caused by a vitamin B12 deficiency, you may have other symptoms, such as:
- a pale yellow tinge to your skin.
- a sore and red tongue (glossitis)
- mouth ulcers.
- pins and needles (paraesthesia)
- changes in the way that you walk and move around.
- disturbed vision.
What are the symptoms of B12 deficiency?
What are the symptoms of vitamin B12 deficiency anemia?
- Weak muscles.
- Numb or tingling feeling in hands and feet.
- Trouble walking.
- Decreased appetite.
- Weight loss.
- Lack of energy or tiring easily (fatigue)
What happens if your B12 is too high?
However, supplementing with excessively high levels of B12 has been linked to some negative side effects. Several studies have shown that megadoses of the vitamin can lead to outbreaks of acne and rosacea, a skin condition that causes redness and pus-filled bumps on the face.
What causes too much B12 in the blood?
The most common cause of high B12 in the blood is due to recent ingestion or injection of supplemental vitamin B12. We don’t worry about overdosing on B12 supplements because excess can be excreted in your urine. It could also be possibly from your diet if high in animal products such as meat, eggs, and shellfish.
Can B12 hurt your liver?
The common forms of vitamin B include vitamin B1 (thiamine), B2 (riboflavin), B3 (niacin), B6 (pyridoxine) and B12 (cyanocobalamin). Except for niacin (when given in high doses), there is no evidence that the other B vitamins, in physiologic or even super-physiologic high doses cause liver injury or jaundice.
Can B12 cause breathing problems?
Shortness of breath
Anemia that results from vitamin B-12 deficiency may cause a person to feel a little short of breath. It is possible to link this to a lack of red blood cells and a fast heartbeat. Anyone who is experiencing real difficulty breathing should see a doctor straight away.
What are the benefits of B12?
Vitamin B12 is a nutrient that helps keep your body’s blood and nerve cells healthy and helps make DNA, the genetic material in all of your cells. Vitamin B12 also helps prevent megaloblastic anemia, a blood condition that makes people tired and weak.
Is vitamin B12 good for lungs?
“Men who took more than 55 micrograms per day of B12 had a 98 percent increased lung cancer risk relative to men who did not take B vitamins,” he noted. Men who smoked at the beginning of the study period and consumed high levels of the B vitamins were three to four times more likely to develop lung cancer, he added.
Is 5000 mcg B12 too high?
In fact, 5000 mcg of Vitamin B12 supplementation is a safe dosing amount. Although, you do not need to consume that much. With the RDA at only 2.4 mcg for healthy adults, taking 5000 mcg just creates expensive urine. You can safely dose at lower levels and still reach the RDA.
Is High B12 common?
An increased vitamin B12 level is uncommon. Usually, excess vitamin B12 is removed in the urine. Conditions that can increase B12 level include: Liver disease (such as cirrhosis or hepatitis)
How much vitamin B12 should a person over 65 take?
Recommended Vitamin B12 Dosage for Seniors
A recent study found that for seniors, a daily dose of 500 micrograms was efficient in reversing the signs of B12 deficiency. In general, experts recommend 2.5 micrograms of vitamin B12 per day for people over the age of 14.