Vitamin B12
Vitamin B12 is an important nutrient that plays a role in normal body functions. This guide explains what it does, common food sources, what can affect intake, and how tracking your diet can help you understand your overall nutrient intake.
Recommended intake varies by age, sex, and life stage. Tracking what you actually eat can help you understand your overall dietary intake over time.
What Vitamin B12 does
Vitamin B12 plays a role in:
- supporting normal nerve function
- contributing to red blood cell formation
- supporting DNA production
- playing a role in normal cell function and growth
Vitamin B12 intake
Intake targets vary across life stages. Age, sex, eating patterns, food variety, and day-to-day routines can all influence how much vitamin B12 appears in a person’s diet.
Tracking can help you compare your usual food pattern with the foods that commonly provide vitamin B12.
Common food sources of Vitamin B12
Food sources of Vitamin B12 may include:
- fish and seafood
- meat and poultry
- eggs
- milk, yogurt, and cheese
- fortified breakfast cereals or fortified nutritional yeast
The amount can vary depending on the food, serving size, preparation method, and brand.
What can affect Vitamin B12 intake
A person’s intake may vary due to factors such as:
- food preferences such as very limited animal foods
- restricted diets or low use of fortified foods
- appetite changes or small meal sizes
- digestive tolerance and limited food variety
- lifestyle habits and meal routines
Why intake may be lower in some people
Some people may find it harder to get enough Vitamin B12 from food alone because of:
- low intake of animal foods or fortified foods
- limited meal variety over time
- poor tolerance of key B12 food sources
- changing appetite or eating patterns
Dietary intake can vary a lot from one person to another. This page is about food intake and tracking, not diagnosis or treatment.
Tracking Vitamin B12 intake
Tracking your food intake can help you see whether your diet includes regular vitamin B12 sources such as animal foods or fortified foods and whether those patterns change over time.
- see whether your diet includes foods that provide Vitamin B12
- spot patterns over time
- identify possible gaps in overall dietary variety
- prepare clearer information for discussion with a healthcare professional
How NutriSignals helps
NutriSignals helps you review vitamin B12 intake from the foods you record. It is designed to help you better understand your diet, identify possible nutrient gaps, and generate clear nutrition reports you can share with your healthcare professional.
When to speak with a healthcare professional
If you have symptoms, ongoing health concerns, a diagnosed condition, or questions about your diet, seek advice from your doctor, specialist, or dietitian. They can assess your individual situation.
Want a clearer picture of your nutrient intake?
NutriSignals helps you track your diet, review nutrient gaps, and create reports you can take to your healthcare professional.