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Published on: Apr 30, 2022
2 minute read
By: Second Medic Expert

What Is PET Scan ?

A PET scan (positron emission tomography) is a type of imaging test that uses a radioactive tracer to look for changes in the function of cells and tissues. A tracer is a substance that is introduced into the body to make it easier to see certain areas or organs. The radioactive tracer used in PET scans emits positrons, which are tiny particles that collide with electrons in the body. This creates gamma rays that can be detected by a scanner and used to create images of the inside of the body. PET scans are often used to diagnose cancer because tumor cells typically have higher levels of activity than normal cells. They can also be used to check for treatment response, measure tumor size, and identify new tumors.

PET Scan is a nuclear medicine imaging test that uses a small amount of radioactive material, called a tracer, to look for disease in the body. A PET Scan can show how well organs and tissues are working. It can help find cancer, heart problems, and other diseases. A Positron Emission Tomography (PET) scan is a medical imaging test that helps physicians diagnose and treat diseases. PET scans use a small amount of radioactive material, called a tracer, to help physicians see how organs and tissues are functioning. The radioactive tracer is injected into the patient's body and travels to the organ or tissue being studied. Physicians can then see where the tracer collects on an image of the organ or tissue.

A PET scan is helpful in diagnosing cancer, heart disease, brain disorders, and other diseases. It can also help determine how well treatment is working. PET Scan is an acronym for Positron Emission Tomography. It's a type of medical imaging that uses a small amount of radioactive material to help diagnose and treat medical conditions. A PET scanner creates 3D images of the inside of the body. PET (positron emission tomography) scans use a small amount of radioactive material called a tracer to help doctors see certain areas of the body. The tracer is injected into a vein, and images are taken as it moves through the body.

PET scans are often used to find cancer because tumors absorb more of the radioactive material than normal tissue does. PET scans can also be used to measure blood flow, check how well drugs work, and see how active the brain is. A PET scan is a type of imaging test that uses radioactive tracers to look at the function and structure of organs and tissues in your body. A small amount of radioactive material is injected into your bloodstream and then scanned by a special camera. The camera creates pictures that show where the material has collected. This can help doctors see how well an organ is working or find tumors or other problems.

PET scan is short for positron emission tomography. It's a type of medical imaging that uses a radioactive tracer to look at organ function or tissue metabolism. The tracer is a small amount of radioactive material that's injected into the patient's bloodstream. It collects in organs and tissues, and a scanner detects the radiation emitted as it decays. This information is used to create cross-sectional images of the body that show how the organs and tissues are working. PET scans are most often used to detect cancer because tumors consume more energy than normal tissue and therefore have a higher metabolic rate. But they can also be used to evaluate other problems, such as heart disease, brain function, and joint damage.

PET scanning is a type of nuclear medicine imaging. A small amount of radioactive glucose (FDG) is injected into a vein and images are taken as the glucose moves through the body. Cancer cells use more energy than normal cells and therefore absorb more of the radioactive glucose. This allows tumors to be visualized on the scan. PET stands for Positron Emission Tomography. A PET scan is a medical imaging test that uses a radioactive tracer to look at organs and tissues inside the body. The tracer is injected into a vein, and images are taken as it moves through the body.

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Symptoms of Chronic Inflammation in the Body: Early Warning Signs Explained

Inflammation is a natural defense mechanism that helps the body fight infections and heal injuries. However, when inflammation persists for months or even years without a clear cause, it becomes chronic. Chronic inflammation can silently damage tissues and increase the risk of serious diseases.

In India, rising cases of lifestyle diseases such as diabetes, heart disease and autoimmune disorders are often linked to long-term inflammatory processes. Recognizing the symptoms of chronic inflammation in the body is essential for early prevention and treatment.

What Is Chronic Inflammation?

Acute inflammation is short-term and occurs in response to injury or infection. Chronic inflammation, on the other hand, is:

Persistent
Low-grade
Often symptomatically subtle
Linked to long-term health conditions

It may occur due to unhealthy lifestyle habits, stress, obesity or underlying disease.

Common Symptoms of Chronic Inflammation

1. Persistent Fatigue

Ongoing tiredness that does not improve with rest may indicate systemic inflammation.

Inflammatory chemicals in the body can interfere with energy production.

2. Joint and Muscle Pain

Unexplained pain, stiffness or swelling in joints may suggest inflammatory conditions such as arthritis.

Pain may:

Last for weeks
Worsen in the morning
Occur without injury

3. Digestive Issues

Chronic inflammation may affect the gut, leading to:

Bloating
Diarrhea or constipation
Abdominal discomfort
Food sensitivities

Gut health and immune function are closely connected.

4. Frequent Infections

A weakened immune response due to chronic inflammation may result in:

Recurrent colds
Slow wound healing
Persistent sore throat

5. Skin Problems

Inflammatory skin conditions include:

Acne
Eczema
Psoriasis
Rashes

Persistent skin issues may reflect internal inflammation.

6. Brain Fog and Mood Changes

Inflammation can affect brain function, causing:

Difficulty concentrating
Memory issues
Irritability
Low mood

Mental and physical health are interconnected.

7. Unexplained Weight Changes

Inflammation may disrupt metabolism, leading to:

Abdominal weight gain
Difficulty losing weight

Obesity itself can further promote inflammation.

Causes of Chronic Inflammation

Common contributing factors include:

Poor diet high in processed foods
Excess sugar intake
Smoking
Alcohol abuse
Chronic stress
Lack of exercise
Sleep deprivation
Environmental pollution

Addressing these factors is essential for prevention.

Diseases Linked to Chronic Inflammation

Long-term inflammation is associated with:

Type 2 diabetes
Cardiovascular disease
Cancer
Autoimmune disorders
Fatty liver disease
Alzheimer’s disease

Early intervention reduces risk significantly.

How to Reduce Chronic Inflammation Naturally

1. Adopt an Anti-Inflammatory Diet

Include:

Fresh fruits and vegetables
Whole grains
Nuts and seeds
Fatty fish
Olive oil

Avoid processed foods and excessive sugar.

2. Exercise Regularly

Moderate physical activity lowers inflammatory markers.

Aim for at least 30 minutes daily.

3. Manage Stress

Chronic stress increases inflammatory hormones.

Practice:

Meditation
Yoga
Deep breathing exercises

4. Improve Sleep

7–8 hours of quality sleep supports immune regulation.

5. Maintain Healthy Weight

Reducing excess body fat lowers inflammation levels.

6. Avoid Smoking and Limit Alcohol

Both habits promote inflammatory responses in the body.

When to Seek Medical Advice

Consult a healthcare professional if you experience:

Persistent fatigue
Joint swelling
Recurrent infections
Unexplained pain
Long-lasting digestive problems

Blood tests such as C-reactive protein (CRP) may help assess inflammation levels.

Chronic Inflammation in the Indian Context

Rapid urbanization, sedentary lifestyle and dietary shifts in India have contributed to increasing inflammatory-related diseases. Public awareness about preventive measures can significantly reduce healthcare burden.

Early lifestyle changes play a crucial role in improving long-term outcomes.

Conclusion

Chronic inflammation may present subtle symptoms such as fatigue, joint pain, digestive issues and brain fog. Although often overlooked, long-term inflammation can increase the risk of serious diseases.

Adopting healthy eating habits, regular exercise, stress management and adequate sleep can help reduce inflammation naturally. Recognizing early warning signs and seeking medical advice when needed ensures better long-term health.

Taking proactive steps today can prevent major complications tomorrow.

References

Indian Council of Medical Research – Chronic Disease Reports
World Health Organization – Non-Communicable Disease Guidelines
National Institute of Nutrition India – Dietary Recommendations
Lancet Global Health – Inflammation Research
Journal of Clinical Medicine – Chronic Inflammation Studies

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