Anemia
Here’s what it reflects — and what to do about it.
Longetic pulls together every lab and record you’ve had, follows how Anemia changes over time, and explains what’s shifting — so you walk into your next appointment prepared, with reminders for retests along the way.
What is Anemia?
A condition in which the blood does not carry enough oxygen to the rest of the body.
If you have anemia, your blood does not carry enough oxygen to the rest of your body. The most common cause of anemia is not having enough iron. Your body needs iron to make hemoglobin. Hemoglobin is an iron-rich protein that gives the red color to blood. It carries oxygen from the lungs to the rest of the body. Anemia has three main causes: blood loss, lack of red blood cell production, and high rates of red blood cell destruction. Conditions that may lead to anemia include: heavy periods, pregnancy, ulcers, colon polyps or colon cancer, inherited disorders, a diet that does not have enough iron, folic acid or vitamin B12, and blood disorders such as sickle cell anemia and thalassemia.
What to know about Anemia
Understanding Anemia means knowing what it reflects, what tends to move it, and the signs that suggest it’s worth a closer look — so you can bring the right questions to your next appointment.
How to read a value in context
Normal red blood cell and hemoglobin levels mean your blood is carrying enough oxygen to your tissues — reflected in hemoglobin, hematocrit, and red blood cell counts within the standard range for your age and sex.
Lifestyle factors that influence this marker
- Eating iron-rich foods alongside vitamin C to boost absorption
- Including folate and B12 sources like leafy greens, eggs, and animal products
- Addressing heavy menstrual bleeding with your doctor if relevant
- Avoiding excessive tea/coffee with meals, which can block iron absorption
- Always see your doctor to find the underlying cause before self-treating anemia
Tests often checked alongside this
- Ferritin and iron studies
- Vitamin B12 and folate
- Reticulocyte count
- Complete blood count (CBC) trends
How this can show up in how you look and feel
- Pale skin
- Fatigue and low energy
- Shortness of breath or dizziness
- Cold hands and feet
- Mild anemia can be present with few or no noticeable symptoms
What can affect this marker
- Iron, B12 and folate intake
- Blood loss, including periods
- Chronic disease or inflammation
- Genetics and inherited conditions
What to track over time
- Hemoglobin trend across tests
- Fatigue and breathlessness patterns
- Response to treatment or supplements
- Related iron and vitamin markers
What to ask your doctor
- What type of anemia do I have?
- What's the underlying cause?
- Do I need iron or vitamin supplements?
- When should I retest my levels?
This glossary entry is for informational purposes only and is not a substitute for professional medical advice. Read our Medical Disclaimer.
References
About our sources
Official sources
Government health agencies, national institutes, and intergovernmental bodies whose guidelines carry regulatory or policy weight.
Clinical / professional
Medical societies, specialty colleges, and professional associations whose consensus statements reflect clinical practice standards.
Peer-reviewed research
Original research articles and systematic reviews published in indexed journals and verified through PubMed or DOI.