Yerba mate (see also here), french fries, some artificial red dyes, sodium benzoate in some brands of soda, cell phones, conventional apple juice, Indonesian tofu made with formaldehyde, animal products, meat (see also here), processed meat (see also here, here, here, here, here, here, here), roasted meat (see also here), grilled and smoked meat (see also here), cigarette smoke, fast food, deep frying, putrescine, lutein supplements, poultry wart viruses, tanning beds, and scented household products may be carcinogenic. Avocados may be harmful based on in vitro (test tube) experiments, but more research is required.

Apples, broccoli, and white tea may contain “anti-carcinogens” and protect against cancer. Citric acid is harmless.

Topic summary contributed by Denise.
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