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Curated by ZOCVI Medical Team
Cancer Prevention & Risk Factors
OverviewCancer Prevention & Risk Factors covers tobacco (India's largest preventable cancer cause), diet, alcohol, infection-related cancers (HPV, hepatitis), occupational exposures, and family history. Our oncologists and editorial team explain what the evidence actually supports versus what is wellness-industry noise, and how to act on the few interventions that genuinely reduce risk.
Last reviewed: 10 August 2026
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Frequently Asked Questions
Expert answers from our medical team
What actually reduces my cancer risk?
The evidence-backed changes are: quit tobacco in every form (India's single largest preventable cancer cause), limit alcohol, keep a healthy weight, stay physically active, eat mostly plants, get HPV vaccination for children and young adults, get hepatitis B vaccination, and screen when eligible. Everything else — antioxidant supplements, superfoods, detox regimens — has little or no evidence behind it.
Does chewing gutka or paan really cause cancer?
Yes — unambiguously. Tobacco, areca nut, and slaked lime in gutka and paan cause oral, throat, and esophageal cancer. India has one of the highest oral cancer rates in the world because of this. There's no 'safe' amount and no filter version. Quitting reduces risk gradually, and the earlier you stop, the more it falls.
Should I get genetic testing for cancer?
Genetic testing (BRCA1/2, Lynch syndrome) is worthwhile if you have a strong family history — multiple close relatives with the same cancer, cancer at unusually young ages, or specific patterns like ovarian or male breast cancer. Without that pattern, routine testing rarely changes management. Talk to a genetic counsellor before testing so you understand what a positive or negative result actually means for you.
Do 'superfoods' or antioxidant supplements prevent cancer?
No. Evidence for specific superfoods or antioxidant pills preventing cancer is weak, and some high-dose antioxidant supplements (beta-carotene in smokers, vitamin E in men) have actually raised cancer risk in trials. A varied diet with plenty of fruits, vegetables, whole grains, and legumes is protective; concentrating on any single food or supplement isn't.
Does HPV vaccination really prevent cancer?
Yes. HPV vaccination given in adolescence (typically ages 9-14, effective up to 26) prevents the strains that cause most cervical cancer and a large share of throat, anal, and penile cancers. India's own Cervavac vaccine is now available at affordable prices. It works best before any sexual exposure to HPV, which is why vaccinating children is the priority.
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