Avoiding, Treating & Curing Cancer | Dr. Alex Marson

About this video

Huberman interviews Dr. Alex Marson of UC San Francisco about avoiding, treating and curing cancer. Dr. Marson describes a convergence in biology — DNA sequencing, understanding cells and rewriting DNA in immune cells — that lets researchers intervene at root causes of disease. He explains CAR-T therapy, in which T cells are engineered with a synthetic receptor to search and destroy cancer cells, and why B-cell cancers have been tractable: healthy B cells also carry the target, but people can tolerate losing them. He discusses the harder challenge of solid tumors and ideas such as requiring T cells to recognize two features before killing. The conversation also gauges everyday cancer risks and notes uncertainty around diet approaches such as ketogenic diets for cancer.

Key takeaways

• Dr. Marson describes engineered CAR-T cells as T cells programmed with a lab-designed receptor to target cancer cells.
• Dr. Marson explains CAR-T worked in B-cell cancers partly because losing healthy B cells is tolerable.
• Dr. Marson describes two-factor recognition as a strategy to make T cells discriminate cancer from healthy tissue.
• Dr. Marson says he does not know whether ketogenic diets are useful for treating or avoiding cancer and that research continues.
• Huberman frames the episode around Dr. Marson’s review of real cancer risks, from smoking and UV light to charred meats and food additives.

Episode details: published March 9, 2026 · 95.2K views · 2:27:13 long. Summary written by Self Growth Videos from the episode itself. The science and protocols described are Andrew Huberman’s, presented for education — not medical advice. Consult a qualified professional before changing your own health practices.

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