Why is Vitamin B2 (riboflavin) low? Causes, symptoms, and what to do
Learn about the causes of low Vitamin B2, its symptoms, and steps you can take to address it.
Check your result
Calculated in your browser - the number is not sent anywhere.
is below the typical adult range (4–24 nmol/L).
is within the typical adult range (4–24 nmol/L).
is above the typical adult range (4–24 nmol/L).
This number is very far from the usual range - check which unit your report uses.
A value this far outside the range is worth discussing with your doctor today.
What a high result usually means
The range printed on your own report comes first - it differs between laboratories. This is not a diagnosis.
See it next to the rest of your report - upload it for a free, private explanationFree. Sign up with your email - no password, we send you a code.Vitamin B2, also known as riboflavin, is a crucial nutrient that plays a significant role in energy production and maintaining overall health. A deficiency in this vitamin can lead to various health issues, making it important to understand the causes, symptoms, and steps to address low Vitamin B2 levels.
What is Vitamin B2?
Vitamin B2, or riboflavin, is a water-soluble vitamin that is part of the B-vitamin family. It helps convert carbohydrates into energy and supports the functioning of the nervous system. Riboflavin is also essential for the maintenance of healthy skin, eyes, and red blood cells. Since it is water-soluble, the body does not store it, so it must be consumed regularly through diet.
Causes of Low Vitamin B2
Low Vitamin B2 levels can be caused by several factors:
- Dietary insufficiency: A diet lacking in riboflavin-rich foods like eggs, lean meats, milk, and green vegetables can lead to deficiency.
- Malabsorption issues: Conditions like celiac disease or Crohn's disease can affect the body's ability to absorb riboflavin from food.
- Increased demand: Certain life stages or conditions, such as pregnancy or chronic illness, may increase the body's need for riboflavin.
- Medication interactions: Some medications can interfere with riboflavin absorption or increase its excretion from the body.
Symptoms of Low Vitamin B2
Symptoms of riboflavin deficiency can vary but often include:
- Cracked corners of the mouth (angular cheilitis)
- Sore throat
- Red, itchy eyes
- Skin rashes
- Fatigue
These symptoms occur because riboflavin is vital for maintaining healthy skin and mucous membranes, as well as energy production.
Diagnosing Low Vitamin B2
Riboflavin levels are rarely measured directly in blood tests. Instead, healthcare providers often assess riboflavin status through a clinical evaluation or by using a red-cell enzyme test called the Erythrocyte Glutathione Reductase Activity Coefficient (EGRAC). This test can indicate riboflavin deficiency by measuring the activity of an enzyme that depends on riboflavin.
Frequently asked questions
What foods are high in Vitamin B2? Foods rich in Vitamin B2 include eggs, lean meats, milk, green leafy vegetables, almonds, and fortified cereals.
Can low Vitamin B2 levels be treated with supplements? Yes, riboflavin supplements can help treat low levels, but it's important to consult a healthcare provider before starting any supplement regimen.
How often should I consume riboflavin-rich foods? Since riboflavin is not stored in the body, it's important to include riboflavin-rich foods in your daily diet to maintain adequate levels.
When to see a doctor
If you experience persistent symptoms of riboflavin deficiency or have a condition that affects nutrient absorption, it may be wise to consult a healthcare provider. They can evaluate your symptoms and determine if further testing or treatment is necessary.
Decisions about your health should always be made in consultation with a qualified healthcare provider.