• Published on: Sep 11, 2021
  • 2 minute read
  • By: Second Medic Expert

The Complete Blood Count (CBC) Second Opinion

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What is CBC test?

CBC stands for a complete blood count. This test is ordered together with, or in lieu of, other tests to find out certain facts about your blood that you can't observe just by looking at the rest of the machine's readout, such as whether you have any abnormally high levels of red and white cells; if there are too many platelets (blood-clotting cells) or too few; what your hematocrit reading reveals (the percentage of circulating red blood cells); or if there are any abnormalities in how your hemoglobin is doing.

A CBC blood test measures a patient's hemoglobin, hematocrit, and red blood cell count. The "CBC" stands for "Complete Blood Count." A CBC test typically catches dangerous aspects of one's health before they could reach a crisis point because there are telltale green flags that show up on the blood screening. Understanding these green flags is imperative for those who suffer from chronic anemia or those who have been exposed to potentially life-threatening chemicals. This free-form amino acid should be supplemented inside a BCAA product as it has been shown to improve recovery rates following intense exercise sessions and acute liver damage in the rat model.

A cbc test, or complete blood count, is a screening test used to detect abnormalities in the colony of cells that reside in the bone marrow and typically produce all types of blood cells.

It also measures white and red blood cell counts as well as platelet counts. Platelets are the clotting components made by type-megakaryocyte cells residing in the bone marrow. White blood cells help fight infection from bacteria and other germs, while red blood cells carry oxygen from the lungs to tissues scattered throughout your body. An abnormal white or red cell indicates a possible illness such as an infection or anemia (which causes reduced numbers of circulating red blood cells

Cbc Test is a diagnostic test used to examine the level of hemoglobin, red cells and white cells in the blood. The CBC can be used to diagnose anemia, infection or other diseases that affect the bone marrow. It may also be done along with a complete blood count (see CBC) or, when necessary, for chemical assessment after taking certain drugs or chemotherapy medications.

The cbc test (complete blood count) is a lab test that provides information on the number and type of cells in your body. A complete blood count (CBC) typically includes information such as red and white cell counts, platelet levels, hemoglobin levels, and other additional data.

A CBC is not typically ordered on its own unless you have symptoms that may be caused by one or more types of problems - for example something that might require further attention such as paroxysmal nocturnal hemoglobinuria (blood disorder), chronic myelogenous leukemia (cancer), thalassemia major (disease). A CBC with differential is usually ordered when there are concerning symptoms or issues present.

CBC testing is a primary way in which a doctor can examine a patient's general health, because it contains information on many different aspects. A CBC typically records at least 7 different parameters:

•Hemoglobin - The protein in red blood cells that delivers oxygen to tissues and binds with carbon dioxide to carry it back from the tissues to be released into our airways.

Red Blood Cell Count - Counts how many red blood cells there are, both normal and abnormal types. This cell type has been singled out because its life span averages 120 days so if there were few being produced, or they were not

However, it is more correctly called "CBC" because there are separate tests that are needed for the different parts of the blood - white cells, red cells, platelets, etc., all found in your complete blood count.

What can possibly be measured depends on what additives you need to do along with the primary measurement of how many cells per milliliter of whole blood you have after mixing with plasma or serum. The most common measurements are hemoglobin (the oxygen-carrying part), hematocrit (counts red cell volume) and mean corpuscular volume.

CBC looks at the various types of cells that are present in your blood - red blood cells, white blood cells, and platelets. This comprehensive test is used to measure the number of each type of cell in relation to one another on a per-microliter basis. It's used primarily as an indicator of health risk for certain time periods (for example infection or bone marrow), but can also be ordered when there are internal bleeding concerns. Common uses include monitoring kidney disease during dialysis treatment, chemotherapy after exposure to radiation therapy, hemolytic anaemias (blood disorders), chronic liver diseases, extreme iron overload due to repeated transfusions, heavy menstrual cycles during pregnancy.

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Role of Nutrition in Disease Prevention: How Food Choices Shape Long-Term Health

Role of Nutrition in Disease Prevention: How Food Choices Shape Long-Term Health

Disease prevention is no longer limited to vaccinations and medical screenings. Modern healthcare increasingly recognises nutrition as one of the most powerful tools for preventing illness before it begins. The role of nutrition in disease prevention is especially important in India, where lifestyle-related diseases account for a large share of premature illness and mortality.

According to the Indian Council of Medical Research (ICMR) and the National Family Health Survey (NFHS-5), poor dietary patterns contribute significantly to rising cases of diabetes, heart disease, obesity and hypertension. Unlike genetic factors, nutrition is a modifiable risk factor, meaning everyday food choices can actively protect health.

 


Why Nutrition Is Central to Disease Prevention

1. Nutrition regulates metabolic health

Balanced diets help maintain:

  • healthy blood sugar levels
     

  • optimal cholesterol balance
     

  • stable blood pressure
     

Disruption in these systems increases disease risk.

2. Nutrition strengthens immunity

WHO highlights that immune function depends heavily on adequate intake of vitamins, minerals and protein.

3. Nutrition controls inflammation

Chronic low-grade inflammation is linked to most lifestyle diseases. Diets rich in whole foods reduce inflammatory markers.

Major Diseases Influenced by Nutrition

Diabetes and Prediabetes

Excess refined carbohydrates and sugar drive insulin resistance.

Preventive nutrition focuses on:

  • whole grains
     

  • fibre-rich vegetables
     

  • adequate protein
     

  • controlled portion sizes
     

ICMR data shows that dietary modification can delay or prevent type 2 diabetes in high-risk individuals.

Cardiovascular Disease

Heart disease remains a leading cause of death in India.

Nutrition impacts:

  • cholesterol levels
     

  • blood pressure
     

  • arterial inflammation
     

Diets low in trans fats and high in fibre significantly reduce cardiovascular risk, as confirmed by WHO and Lancet studies.

Obesity

Obesity increases the risk of multiple chronic diseases.

Preventive nutrition addresses:

  • calorie density
     

  • food quality
     

  • satiety regulation
     

NFHS-5 reports a steady rise in overweight and obesity across age groups.

Hypertension

High sodium intake and low potassium intake contribute to high blood pressure.

Preventive dietary strategies include:

  • reducing processed foods
     

  • increasing fruits and vegetables
     

  • maintaining mineral balance
     

Certain Cancers

Diet influences cancer risk through:

  • antioxidant intake
     

  • fibre consumption
     

  • reduced exposure to carcinogenic compounds
     

WHO estimates that a significant percentage of cancers are preventable through diet and lifestyle changes.

Key Nutrients That Support Disease Prevention

Fibre

Supports gut health, blood sugar control and cholesterol reduction.

Protein

Essential for muscle health, immune function and metabolic balance.

Healthy Fats

Omega-3 fats reduce inflammation and protect heart health.

Micronutrients

Iron, zinc, vitamin D and B vitamins are essential for metabolic and immune regulation.

NFHS-5 highlights widespread micronutrient deficiencies in India, increasing disease vulnerability.

Role of Gut Health in Prevention

The gut microbiome plays a major role in:

  • immune regulation
     

  • inflammation control
     

  • nutrient absorption
     

Fermented foods and fibre-rich diets support healthy gut bacteria, strengthening disease resistance.

 

Why Preventive Nutrition Works Best Early

Nutrition is most effective when applied:

  • before disease onset
     

  • during pre-disease stages
     

  • alongside regular health screening
     

Once disease progresses, nutrition remains supportive but may not reverse damage fully.

Nutrition vs Medication in Prevention

Medication treats disease; nutrition reduces risk.

WHO and NITI Aayog emphasize that:

  • preventive nutrition reduces disease incidence
     

  • lifestyle modification lowers healthcare burden
     

  • early nutrition changes reduce dependency on long-term medication
     

Both approaches work best when combined appropriately.

Workplace and Community Role in Preventive Nutrition

Structured nutrition programs at workplaces and communities:

  • improve awareness
     

  • support behaviour change
     

  • reduce population-level disease burden
     

Lancet studies show that group-based nutrition interventions improve long-term adherence.

 

Common Myths About Nutrition and Disease Prevention

Myth 1: Supplements replace healthy food

Whole foods provide better long-term protection.

Myth 2: Prevention requires extreme diets

Consistency matters more than restriction.

Myth 3: Nutrition only matters after diagnosis

Early nutrition is most effective before disease develops.

Building a Preventive Nutrition Routine

Effective preventive nutrition includes:

  • regular meals
     

  • diverse food groups
     

  • portion awareness
     

  • minimal processed foods
     

  • hydration
     

Small daily choices compound into long-term health benefits.

Long-Term Impact of Preventive Nutrition

Consistent healthy eating leads to:

  • reduced disease risk
     

  • improved energy and productivity
     

  • better immune resilience
     

  • lower healthcare costs
     

  • improved quality of life
     

NITI Aayog identifies nutrition as a cornerstone of sustainable healthcare systems.

Conclusion

Understanding the role of nutrition in disease prevention empowers individuals to take control of their health long before illness develops. Balanced, consistent nutrition reduces inflammation, supports immunity and protects against chronic diseases that burden India’s healthcare system. Preventive nutrition is not about short-term fixes but about building lifelong habits that support health, resilience and longevity.

 

References

  • ICMR – Nutrition and Lifestyle Disease Prevention Reports
     

  • National Family Health Survey (NFHS-5) – Dietary and Metabolic Health Data
     

  • NITI Aayog – Preventive Healthcare and Nutrition Strategy Reports
     

  • WHO – Diet, Nutrition and Chronic Disease Prevention Guidelines
     

  • Lancet – Nutrition and Disease Risk Reduction Studies
     

  • Statista – Dietary Trends and Health Outcomes India
     

  • EY-FICCI – Preventive Healthcare and Nutrition Economics

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