First, here are some plants or plant-derived compounds that have been studied for their effects on lung cancer cells in vitro (in a lab). None are approved as standalone cures, and their “killing” of cancer cells is in very controlled lab settings. Here are a few examples:
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Deguelin
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According to a study from UT M.D. Anderson Cancer Center, deguelin inhibited the growth of precancerous and cancerous human bronchial epithelial cells by promoting cell death, without apparent toxicity to normal cells. NutraIngredients.com
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It appears to act by inhibiting Akt activation, a signaling pathway that helps cancer cells survive. NutraIngredients.com
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Important caveat: These are lab cell line results, not clinical trials.
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Verbascum ponticumA study showed that extract from Verbascum ponticum (a type of mullein) induced apoptosis (programmed cell death) in A549 lung cancer cells via a mitochondrial pathway. MDPI+1
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Specifically, it disrupted mitochondrial membrane potential and released a protein called AIF (apoptosis-inducing factor), leading to cancer cell death. PubMed+1
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Again: in vitro only — not a proven cancer treatment in humans.
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Berberine
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