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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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Digestive System Disorders: Common Causes, Symptoms, and Prevention Tips

The digestive system plays a vital role in overall health by breaking down food, absorbing nutrients and eliminating waste. When this system does not function properly, it can lead to discomfort, poor nutrition and chronic illness. Digestive system disorders are increasingly common due to modern lifestyles, dietary habits and stress. Understanding their causes, symptoms and prevention strategies is essential for maintaining long-term gut health.

Public health research shows that a large proportion of adults experience digestive symptoms at some point in their lives, yet many delay seeking care until problems become severe.

What Are Digestive System Disorders?

Digestive system disorders are conditions that affect:

the oesophagus
stomach
intestines
liver
pancreas
gallbladder

They may be temporary or chronic and range from mild functional issues to serious inflammatory or structural diseases.

Common Digestive System Disorders

Acid Reflux and GERD

Gastroesophageal reflux disease (GERD) occurs when stomach acid flows back into the oesophagus.

Symptoms include:

heartburn
chest discomfort
sour taste in mouth
difficulty swallowing

Long-term reflux can damage the oesophagus if untreated.

Irritable Bowel Syndrome (IBS)

IBS is a functional bowel disorder.

Symptoms include:

abdominal pain
bloating
diarrhoea or constipation
alternating bowel habits

Stress and diet often trigger symptoms.

Constipation

Constipation involves infrequent or difficult bowel movements.

Causes include:

low fibre intake
dehydration
sedentary lifestyle

Chronic constipation affects comfort and gut function.

Diarrhoea

Diarrhoea results from rapid bowel movements.

Common causes include:

infections
food intolerance
medication side effects

Persistent diarrhoea may lead to dehydration and nutrient loss.

Peptic Ulcer Disease

Ulcers are sores in the stomach or intestinal lining.

Symptoms include:

burning stomach pain
nausea
bloating

They are often linked to infections or long-term medication use.

Inflammatory Bowel Disease (IBD)

IBD includes conditions like Crohn’s disease and ulcerative colitis.

Symptoms include:

chronic diarrhoea
abdominal pain
weight loss
fatigue

IBD requires long-term medical management.

Common Symptoms of Digestive Disorders

Digestive system disorders often present with:

abdominal pain or cramps
bloating and gas
nausea or vomiting
constipation or diarrhoea
heartburn
unexplained weight changes

Symptoms may fluctuate and worsen with stress or poor diet.

Causes of Digestive System Disorders

Poor Dietary Habits

Diets high in:

processed foods
refined sugars
unhealthy fats

strain the digestive system and alter gut microbiota.

Stress and Mental Health

Chronic stress affects gut-brain communication, worsening digestive symptoms.

Infections

Bacterial, viral or parasitic infections disrupt gut function.

Food Intolerances

Lactose, gluten or other intolerances cause digestive distress.

Sedentary Lifestyle

Lack of physical activity slows digestion and bowel movement.

Medication Use

Certain medications irritate the stomach lining or alter gut flora.

Who Is at Higher Risk?

People at increased risk include:

individuals with poor diet
those under chronic stress
older adults
people with family history of gut disease
individuals with sedentary lifestyles

Early lifestyle correction reduces risk significantly.

Diagnosis of Digestive Disorders

Evaluation may include:

medical history
physical examination
blood tests
stool tests
imaging or endoscopy

Diagnosis depends on symptom severity and duration.

Treatment Approaches

Medical Management

Treatment varies by condition and may include:

acid suppressants
anti-inflammatory medications
probiotics
antibiotics when needed

Dietary Modifications

increase fibre intake
limit trigger foods
eat regular meals
avoid excessive alcohol

Diet plays a central role in gut health.

Lifestyle Changes

manage stress
exercise regularly
stay hydrated
maintain sleep routine

Healthy habits support digestive function.

Prevention Tips for Digestive Health

Eat a Balanced Diet

Include fruits, vegetables, whole grains and lean proteins.

Stay Hydrated

Water supports digestion and prevents constipation.

Manage Stress

Mindfulness and relaxation techniques improve gut-brain balance.

Be Physically Active

Movement stimulates bowel activity and gut motility.

Avoid Smoking and Excess Alcohol

These irritate the digestive tract and worsen symptoms.

Seek Early Medical Advice

Early care prevents complications and chronic disease.

Long-Term Impact of Ignoring Digestive Problems

Untreated digestive disorders may lead to:

nutrient deficiencies
chronic inflammation
poor quality of life
increased disease complications

Early intervention is more effective and less invasive.

When to Consult a Doctor

Medical advice is recommended if:

symptoms persist beyond weeks
pain is severe
blood appears in stool
unexplained weight loss occurs

Prompt evaluation ensures safe management.

Conclusion

Digestive system disorders are common but often underestimated health issues. Symptoms such as bloating, pain, constipation and heartburn may seem minor initially but can signal deeper problems if ignored. Understanding causes, recognising early symptoms and adopting preventive habits help protect digestive health. With timely care, balanced nutrition and healthy lifestyle choices, most digestive disorders can be effectively managed, allowing the digestive system to function smoothly and support overall wellbeing.

References

Indian Council of Medical Research (ICMR) – Digestive Health and Nutrition Reports
World Health Organization (WHO) – Digestive Disorders and Gut Health Guideline
National Institute of Nutrition (NIN) – Dietary Fibre and Gut Health Researc
Lancet – Gastrointestinal Disease and Prevention Studies
Indian Journal of Gastroenterology – Digestive Disorder Research
Statista – Digestive Health Trends and Lifestyle Factors

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