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Screening and prevention myths,
answered with evidence.
క్యాన్సర్ స్క్రీనింగ్, నివారణ – అపోహలు, నిజాలు
Many cancers can be prevented, and several can be found early through screening. But not every test is useful, and some do more harm than good. This series explains proven prevention, the screening tests that work, and who needs them when.
22 myths · Updated October 2026
Cancer prevention and lifestyle
Cancer can't be prevented, it's entirely a matter of luck?
క్యాన్సర్‌ను నివారించలేం, అంతా అదృష్టమేనా?Not every cancer is preventable, but avoiding tobacco, keeping a healthy weight, staying active, vaccination and other measures lower the risk of several cancers.
Read the factsMyth #02 · Prevention & lifestyleOnly smokers get cancer?
సిగరెట్ తాగేవాళ్లకు మాత్రమే క్యాన్సర్ వస్తుందా?Tobacco is a major preventable cause of cancer, but cancer also occurs in people who have never smoked. Smokeless tobacco and areca nut products carry important cancer risks too.
Read the factsMyth #03 · Prevention & lifestyleIf cancer runs in the family, prevention is useless?
వంశంలో క్యాన్సర్ ఉంటే నివారణ వల్ల ఉపయోగం లేదా?Inherited risk can raise the chance of cancer, but genetic counselling, closer screening and selected risk-reducing measures can help.
Read the factsMyth #04 · Prevention & lifestyleCancer is caused mainly by eating sugar?
క్యాన్సర్ ముఖ్యంగా చక్కెర తినడం వల్లే వస్తుందా?Sugar doesn't specially "feed" cancer in a way that makes cutting it out a cure or reliable prevention. But too many calories and excess weight raise the risk of several cancers.
Read the factsMyth #05 · Prevention & lifestyleTaking vitamins, herbal products or antioxidant supplements prevents cancer?
విటమిన్లు, మూలికా ఉత్పత్తులు, యాంటీఆక్సిడెంట్ మాత్రలు క్యాన్సర్‌ను నివారిస్తాయా?Routine supplements have not been shown to reliably prevent cancer in the general population. Some high-dose supplements may even cause harm.
Read the factsBreast and cervical cancer screening
Breast cancer screening is necessary only when a lump develops?
గడ్డ వచ్చినప్పుడే రొమ్ము క్యాన్సర్ పరీక్ష అవసరమా?Screening mammography aims to find breast cancer before any symptoms appear. A new breast symptom needs a diagnostic assessment, not just routine screening.
Read the factsMyth #07 · Breast & cervical screeningMammography causes breast cancer because of the radiation?
మామోగ్రామ్ రేడియేషన్ వల్ల రొమ్ము క్యాన్సర్ వస్తుందా?Mammography uses a low dose of radiation. For women in the recommended age groups, the benefits of screening generally outweigh the small radiation risk.
Read the factsMyth #08 · Breast & cervical screeningA normal mammogram guarantees that breast cancer is absent?
మామోగ్రామ్ నార్మల్ వస్తే రొమ్ము క్యాన్సర్ లేదని ఖచ్చితమా?Mammography can miss some cancers, especially in dense breasts. A new lump, nipple discharge or other worrying change still needs to be checked.
Read the factsMyth #09 · Breast & cervical screeningCervical cancer screening is unnecessary after HPV vaccination?
హెచ్‌పీవీ టీకా వేయించుకుంటే గర్భాశయ ముఖద్వార పరీక్ష అవసరం లేదా?HPV vaccination greatly reduces the risk, but doesn't remove it. Vaccinated women should continue recommended cervical screening.
Read the factsMyth #10 · Breast & cervical screeningPap smears detect all cancers of the female reproductive system?
పాప్ స్మియర్ స్త్రీల జననేంద్రియాల క్యాన్సర్లన్నిటినీ కనిపెడుతుందా?Pap and HPV tests are designed to screen for cervical cancer. They don't reliably screen for ovarian, womb or other gynaecological cancers.
Read the factsMyth #21 · Breast & cervical screeningExamining my own breasts every month is enough; I don’t need a check-up?
నెలకోసారి నా రొమ్ములు నేనే పరీక్షించుకుంటే చాలు, డాక్టర్ పరీక్ష అవసరం లేదా?Knowing how your breasts normally look and feel helps you notice changes early, but it does not replace a clinical breast examination or a screening mammogram.
Read the factsScreening tests and misconceptions
A whole-body PET-CT scan is the best yearly cancer screening test?
ఏటా శరీరమంతా పెట్ సీటీ స్కాన్ చేయించుకోవడమే ఉత్తమ క్యాన్సర్ పరీక్షా?PET-CT is not recommended for routine screening in healthy people at average risk. False alarms, chance findings, radiation and unnecessary procedures are real concerns.
Read the factsMyth #12 · Screening testsA normal tumour-marker blood test means there is no cancer?
ట్యూమర్ మార్కర్ రక్త పరీక్ష నార్మల్ వస్తే క్యాన్సర్ లేనట్లేనా?Markers such as CEA, CA 19-9, CA-125 and AFP are not reliable general cancer screening tests. Normal results can't rule out cancer.
Read the factsMyth #13 · Screening testsEveryone should have a full-body CT scan every year to detect cancer early?
క్యాన్సర్ త్వరగా కనిపెట్టడానికి అందరూ ఏటా శరీరమంతా సీటీ స్కాన్ చేయించుకోవాలా?Routine whole-body CT is not recommended for healthy people at average risk, because the benefits are unproven and the harms include radiation and chance findings.
Read the factsMyth #14 · Screening testsColonoscopy is needed only when there is blood in the stools?
మలంలో రక్తం పడినప్పుడే కొలనోస్కోపీ అవసరమా?Bowel screening can find and remove polyps before any symptoms appear. When to start depends on age, family history and other risk factors.
Read the factsMyth #15 · Screening testsA negative stool blood test completely rules out colorectal cancer?
మలంలో రక్త పరీక్ష నెగటివ్ వస్తే పేగు క్యాన్సర్ పూర్తిగా లేనట్లేనా?Stool tests can miss cancers and large polyps. Symptoms such as persistent bleeding or unexplained iron-deficiency anaemia need full investigation, even after a negative test.
Read the factsMyth #22 · Screening testsA thermal (heat) scan can replace a mammogram?
థర్మల్ (వేడి) స్కాన్ మామోగ్రామ్‌కు బదులు కాగలదా?Thermal imaging of the breast has not been shown to replace mammography for finding breast cancer early.
Read the factsWho needs screening, and when?
Everyone should have a yearly low-dose CT scan for lung cancer?
ఊపిరితిత్తుల క్యాన్సర్ కోసం అందరూ ఏటా తక్కువ మోతాదు సీటీ స్కాన్ చేయించుకోవాలా?Low-dose CT screening is recommended only for defined high-risk groups, mainly based on age and smoking history. It is not recommended for all adults.
Read the factsMyth #17 · Who needs screeningHealthy people don't need cancer screening?
ఆరోగ్యంగా ఉన్నవారికి క్యాన్సర్ పరీక్షలు అవసరం లేదా?Screening is meant precisely for people without symptoms who meet age- or risk-based criteria.
Read the factsMyth #18 · Who needs screeningIf there is no family history, cancer screening is unnecessary?
కుటుంబంలో ఎవరికీ లేకపోతే క్యాన్సర్ పరీక్షలు అవసరం లేదా?Many cancers occur without any family history. Screening recommendations for the general population don't depend only on inherited risk.
Read the factsMyth #19 · Who needs screeningMore screening tests always mean better cancer prevention?
ఎక్కువ పరీక్షలు చేయిస్తే ఎప్పుడూ మంచి నివారణేనా?Unnecessary tests can cause false alarms, overdiagnosis, anxiety, radiation exposure and avoidable procedures. Screening should have a proven overall benefit for the individual.
Read the factsMyth #20 · Who needs screeningOnce a screening test is normal, there's no need to repeat it?
ఒకసారి పరీక్ష నార్మల్ వస్తే మళ్లీ చేయించుకోవాల్సిన అవసరం లేదా?Screening intervals depend on the test, age, risk and previous results. A normal test doesn't give lifelong protection.
Read the facts