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Effects of Vitamin B-12

Writer: Jack WhalenJack Whalen

Updated: Jul 20, 2023

By: Jack Whalen

Vitamin B-12 is an essential nutrient required for many processes in the human body. It is found in foods like meat, seafood, dairy, and eggs that come from animals. This vitamin is essential for creating DNA, sustaining neurological function, and preserving healthy red blood cells.


Health Benefits of Vitamin B-12

  • Supports red blood cell formation by helping produce red blood cells responsible for carrying oxygen throughout the body

  • Essential for DNA synthesis

  • Supports energy production by converting food into glucose

  • It promotes brain health and may also help to reduce the risk of depression and other mental health conditions.

  • Supports heart health by reducing homocysteine levels, an amino acid that can damage blood vessels and increase the risk of heart disease if levels are too high

  • Maintains nervous system function essential for the maintenance and proper functioning of the nervous system

Potential Negatives of Vitamin B-12

  • Headache

  • Nausea and vomiting

  • Diarrhea

  • Fatigue or weakness

  • Tingling sensation in hands and feet

It is vital to consider several variables such as age, gender, and overall health status when determining the suitable daily amount of Vitamin B 12 needed by an individual. Experts suggest an average intake of 2.4 micrograms per day for adults as a guideline for effectively meeting nutritional requirements. However, pregnant and breastfeeding women may require slightly higher amounts due to the increased demands during these specific stages. It is worth noting that our bodies can store Vitamin B 12 extensively. Consequently, even if our diet contains sufficient amounts of this nutrient, a gradual deficiency may occur as these stores become depleted. Certain groups, such as individuals who are vegetarians or vegans or those dealing with digestive or absorption complications, may be deficient. Individuals taking certain medications should consider including a Vitamin B 12 supplement in their daily regime to fulfill their nutritional needs optimally. Consultation with a healthcare professional is strongly advised to determine the appropriate dosage based on personalized requirements. Additionally, It is essential to exercise caution when considering excessive doses of Vitamin B 12 supplements due to their water-soluble nature. In instances of overdosage, the body will naturally excrete any excess amounts.


Foods that are High in Vitamin B-12

  • Beef, liver, pork, and chicken

  • Fish and Seafood: Salmon, tuna, herring, and clams

  • Milk, cheese, and yogurt

  • Eggs

  • Breakfast cereals

  • Nutritional yeast

  • Soy products

  • Almond milk and other non-dairy milk

  • Meat substitutes

While not considered a definitive remedy for alleviating ADHD symptoms outright,

Studies have hinted at possible favorable outcomes associated with Vitamin B 12 supplementation in mitigating select aspects related to ADHD. Significantly, owing to its involvement in energy metabolism processes operating within the body's framework, increases in overall energy levels fostered by this essential vitamin may potentially support concentration and attention span amongst individuals diagnosed with ADHD. A study by Dilek Unal supports this as he stated, "B vitamins are not only required for neurotransmitter synthesis and functioning but also for myelination of the spinal cord and brain. As ADHD is a neurodevelopmental disease, vitamin B12 deficiency may be one factor that worsens ADHD symptoms, and it may be a reasonable attitude to keep the vitamin B12 levels high in ADHD patients." B-12 should not replace traditional ADHD treatment, but it may be worthwhile to give it a chance.


Bibliography

Full article: Vitamin B12 and hemoglobin levels may be related with ... (n.d.). https://www.tandfonline.com/doi/full/10.1080/24750573.2018.1459005

Mayo Foundation for Medical Education and Research. (2021, July 17). Vitamin B-12. Mayo Clinic. https://www.mayoclinic.org/drugs-supplements-vitamin-b12/art-20363663

Vitamin B12. The Nutrition Source. (2023, March 7). https://www.hsph.harvard.edu/nutritionsource/vitamin-b12/

 
 
 

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