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Core Viewpoint - The 27th "World Cancer Day" on February 4, 2026, emphasizes a human-centered approach to cancer prevention, screening, and treatment, highlighting that one-third of cancers are preventable and one-third are curable [1] Group 1: Cancer Prevention - Smoking cessation and avoiding secondhand smoke are crucial, as smoking is the primary cause of lung cancer; quitting smoking can reduce lung cancer risk by 50% after 10-15 years [1] - A balanced diet rich in fresh fruits, vegetables, whole grains, and quality proteins is essential; avoiding moldy foods, high-salt preserved foods, and processed meats can lower cancer risk [1] - Regular physical activity of at least 150 minutes per week and limiting alcohol consumption are recommended to reduce the risk of various cancers [1] Group 2: Early Detection - Regular screening is vital for early cancer detection, with specific recommendations for different types of cancer: - Lung cancer screening for individuals over 50 with a smoking history of 20 pack-years, using low-dose spiral CT annually [2] - Colorectal cancer screening starting at age 45 with fecal occult blood tests and colonoscopy if results are abnormal [3] - Stomach cancer screening for individuals over 40 in high-risk areas or those infected with Helicobacter pylori, using regular gastroscopy [4] - Liver cancer screening for long-term drinkers and patients with hepatitis B or cirrhosis, with semi-annual serum alpha-fetoprotein tests and liver ultrasounds [5] - Breast cancer screening for women starting at age 40 with mammograms every 1-2 years, and high-risk women starting at age 35 annually [6] - Cervical cancer screening for women over 25 with cytology tests, and HPV testing for those over 30 [7] - Prostate cancer screening for men starting at age 50 every 2 years, and high-risk men starting at age 45 annually with PSA tests and digital rectal exams [8] Group 3: Treatment and Support - Upon cancer diagnosis, patients should avoid pseudoscientific treatments and seek care from reputable medical institutions, utilizing precision radiotherapy and targeted therapies to improve survival rates and quality of life [9] - Psychological support is crucial during cancer treatment, with professional counseling, peer support, music therapy, and rehabilitation exercises recommended to enhance mental and physical well-being [9] - The call for collective societal effort emphasizes that everyone should take responsibility for their health, combining healthy habits, proactive screening, scientific treatment, and social support to build a comprehensive defense against cancer [9]