Understanding Cancer and Its Prevention
In this section, we aim to explore different types of cancer, their causes, prevention strategies, and treatment options. Given the rising prevalence of cancer and the decreasing average age of onset, awareness and prevention have become more crucial than ever.
Most Common Cancers
We will cover the following types of cancer:
Lung cancer
Breast cancer
Colorectal cancer
Stomach cancer
Prostate cancer
Pancreatic cancer
Cervical cancer
Factors Contributing to Cancer
Cancer develops under the influence of environmental, viral, and lifestyle factors.
Environmental and lifestyle factors include:
Unhealthy diet
Physical inactivity
Exposure to air pollution
Consumption of foods containing toxins
Viral factors include:
Human Papillomavirus (HPV)
Hepatitis B and C viruses
HIV
Epstein–Barr virus (EBV)
Fortunately, many of these risk factors are preventable through lifestyle changes, vaccination, and healthy nutrition.
How Cancer Cells Obtain Energy
Cancer cells rely on glucose and glutamine for energy due to mitochondrial damage.
Scientific approaches for prevention and control include:
Ketogenic diet
Anti-glutamine drugs
Maintaining mitochondrial health through proper nutrition and a healthy lifestyle
Healthy Lifestyle for Prevention
Avoid processed foods and simple sugars
Consume high-quality protein, fiber, and fermented foods
Include leafy greens, colorful fruits, and natural antioxidants
Engage in regular physical activity and maintain adequate sleep
Intermittent Fasting and Cancer Prevention
Intermittent fasting may help prevent cancer by reducing inflammation, regulating metabolism, and strengthening the immune system.
Key benefits include:
Blood sugar balance
Reduced inflammation
Enhanced immunity
Improved metabolism
Fasting should be gradual and supervised by a healthcare professional.
Preventing Common Cancers
Up to 80% of common cancers, such as lung, skin, colorectal, breast, and ovarian cancers, are preventable:
Healthy and balanced diet
Avoiding tobacco and alcohol
Regular screenings and check-ups
Physical activity and stress management
Even if cancer occurs, early diagnosis significantly improves treatment outcomes.
Overview of Major Cancers
Breast Cancer
Most common cancer among women
Risk increases with age, family history, and BRCA1/2 mutations
Symptoms: lumps in the breast or underarm, unusual discharge, changes in appearance
Screening methods: mammography, medical examination, self-examination, ultrasound, MRI
Colorectal Cancer
Risk factors: age >50, family history, low-fiber diet, obesity, smoking, alcohol
Prevention: start screening at 45, high-fiber diet, regular exercise, maintain healthy weight
Prostate Cancer
Common in men over 50
Warning signs: urinary changes, blood in urine, incontinence
Diagnosis: PSA test, physical examination, ultrasound, MRI, biopsy
Stomach Cancer
More common in men and high-risk regions
Risk factors: H. pylori infection, unhealthy diet, smoking, family history
Symptoms: persistent stomach pain, unexplained weight loss, nausea, black stools
Screening: endoscopy, barium swallow, biopsy
Liver Cancer
Sixth most common cancer, third leading cause of cancer death
Risk factors: chronic hepatitis B/C, cirrhosis, excessive alcohol consumption
Warning signs: weight loss, loss of appetite, abdominal pain, jaundice
Screening: abdominal ultrasound, AFP test, CT/MRI
HPV Vaccine
Effective in preventing cervical cancer
Recommended for adolescents before sexual activity
Administered in three doses; not recommended during pregnancy
Summary
Cancer is not entirely preventable, but a healthy lifestyle can significantly reduce the risk
Major risk factors: obesity, diabetes, chronic inflammation, unhealthy diet
Awareness, early detection, and a healthy lifestyle are the three pillars of cancer prevention
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