Have you ever picked up a blood test report, looked at the words on it, and thought, "What is this?" One of the words you see on those reports is hemoglobin. Also, when talking about diabetes, one of the tests you definitely hear is A1C. Both of these tell us a lot about the health of our body. So today, we'll talk about hemoglobin and the A1C test in a very simple way that you can understand.
What exactly is hemoglobin?
Simply put, hemoglobin is a special protein found inside our red blood cells. It's like a 'delivery service' that works inside our bodies.
Its main function is to collect oxygen that enters the lungs when we breathe and deliver it to tissues throughout the body. It also carries the carbon dioxide that is produced in those tissues back to the lungs to be expelled when we exhale. This hemoglobin is what gives our blood its red color.
A hemoglobin molecule is made up of four protein chains. Each of these chains has a part called 'heme' that contains iron. Oxygen molecules come and attach to this part that contains iron. This means that if your body doesn't have enough iron, your body won't be able to make enough hemoglobin. Then the ability to carry oxygen throughout the body will be impaired.
What does low and high hemoglobin levels mean?
The amount of hemoglobin our body needs depends on many factors, including age, gender, and general health. For example, people who live in mountainous areas, that is, high altitudes, have slightly higher hemoglobin levels than those who live near sea level.
Hemoglobin is measured in grams per deciliter (gm/dL). Normal healthy levels are as follows:
- Men: 14.0 to 17.5 gm/dL
- Women: 12.3 to 15.3 gm/dL
Now let's see what happens if these levels change.
| Status | Causes and symptoms |
|---|---|
| Low Hemoglobin | We usually call this condition anemia . There are several main reasons why this happens:
Main symptoms: constant fatigue, paleness, fatigue, chest pain, dizziness. |
| High Hemoglobin | This usually occurs due to prolonged low oxygen levels in the body (hypoxia). It can be caused by:
Main symptoms: headache, blurred vision, dizziness, skin rash, risk of blood clots. |
Important: If your hemoglobin level is low or high on the report, don't panic, but see your doctor to find out the exact cause.
Now let's talk about the A1C test.
When talking about hemoglobin, one of the most important tests related to it is the HbA1c, or as we all know it, the A1C test. This is an essential test to diagnose Diabetes Mellitus and to see how well a person with diabetes is managing their disease.
What does the A1C test tell us?
Think about a cricketer's batting average for an entire season. You can't tell whether he's a good player or not based on the runs he scores in a single match. But looking at his average for the entire season, you can get a good idea of his skill.
The A1C test is similar. Rather than looking at your blood sugar levels on a single day, this test shows what your blood sugar levels have been like over the past 2-3 months .
How does this work?
The sugar (glucose) in our blood attaches to the hemoglobin in our red blood cells. As blood sugar levels increase, the amount of sugar that attaches to hemoglobin also increases. Since the average lifespan of a red blood cell is about 3 months, this test gives a good picture of your average blood sugar levels over the past 3 months.
A1C levels and their meaning
The A1C result is given as a percentage (%). Here's what those results mean.
| A1C percentage (%) | Meaning |
|---|---|
| Less than 5.6% | Normal - You do not have diabetes. |
| 5.7% to 6.4% | Prediabetes - You are at a higher risk of developing diabetes. This is a warning! |
| 6.5% or more | Diabetes - You are confirmed to have diabetes. |
When does an A1C level become dangerous?
If your A1C level is higher than 9%, it is a very dangerous condition . It means that your diabetes is not under control at all. This greatly increases the risk of serious complications such as vision loss, kidney failure, nerve damage (diabetic neuropathy), heart disease, and stroke.
How to control A1C and hemoglobin levels?
When treating both of these conditions, it's important to find the underlying cause. Your doctor will perform the necessary tests and prescribe the most appropriate treatment for you.
If hemoglobin is low:
Eating foods rich in iron is very important.
- Heme Iron: Beef, chicken, fish (e.g. tuna), shrimp, and other meats.
- Non-heme iron in plant foods: spinach, lentils, chickpeas, soy, dates, raisins, pumpkin seeds.
- Important tip: When you eat iron-rich foods with foods rich in vitamin C (lemon, oranges, tangerines, tomatoes, guava), the body's absorption of iron becomes much more efficient.
If the A1C level is high:
Doctors generally recommend that people with diabetes keep their A1C levels below 7%. To do this:
- Diet control: Control foods containing starch (carbohydrates) (rice, bread, potatoes, sweets). Eat a balanced diet. Completely stop sugary drinks.
- Exercise:Engage in moderate exercise, such as walking, for at least 30 minutes every day. Exercise improves the body's ability to use insulin.
- Medications: It is essential to take the medications prescribed by the doctor at the right time and in the right dosage.
Don't forget, don't try to do any of this on your own. Talk to your doctor about any changes you make to your lifestyle and diet.
Take-Home Message
- Hemoglobin is a protein found in red blood cells that carries oxygen throughout our bodies.
- A low or high hemoglobin level can be a symptom of anemia, so it is important to seek medical advice.
- The A1C test shows your average blood sugar level over the past 2-3 months.
- If the A1C level is between 5.7% - 6.4%, it is prediabetes. If it is 6.5% or higher, it is diabetes.
- A healthy diet, exercise, and medication prescribed by your doctor can help maintain healthy hemoglobin and A1C levels.
- If you have any questions about the results of your blood test, don't hesitate to ask your doctor.











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