Broadcast from KSQD, Santa Cruz on 6-12-2025:

• Dr. Dawn opens with alarming news about NIH budget cuts devastating cancer research just as breakthrough CAR-T cell therapy shows promise for gastrointestinal cancers. This personalized immunotherapy extracts patients' T cells, engineers them to target specific cancer antigens, and makes them essentially immortal before reinfusion. While previously successful only for blood cancers like leukemia and lymphoma, researchers achieved tumor shrinkage in 25% of solid GI tumor patients. However, devastating layoffs forced removal of two patients from trials due to staff shortages and supply chain disruptions.
• Dr. Dawn emphasizes how pregnancy can worsen hidden cancers due to immune suppression, explaining why aggressive metastasized cancers often appear shortly after childbirth.
• Dr. Dawn takes a call from Bob about concerning forehead growths his dermatologist examined. She speculates they're likely seborrheic keratoses - benign, stuck-on appearing growths common in sun-exposed areas that look like crumpled brown paper "spit-wads". These aging-related changes are harmless and can even be picked off, though she warns against repeatedly traumatizing any skin area as this increases cancer risk through accumulated DNA damage. She explains how repetitive trauma in occupational settings creates statistically higher cancer risks, comparing it to filling a bingo card of cellular errors.
• She addresses an email about Joe Tippens' cancer cure protocol involving fenbendazole, an anti-parasitic drug. Dr. Dawn explains this viral social media phenomenon began when Tippens claimed his lung cancer was cured by fenbendazole, but he was simultaneously receiving Keytruda immunotherapy at MD Anderson. The story spread rapidly in South Korea, causing pharmacy shortages. Unvalidated internet health information can spread dangerously. Dr. Dawn compares it to old-fashioned medicine show scams. trend
• Dr. Dawn warns about a recent vitamin B6 toxicity misdiagnosis trend affecting her patients who were told they had dangerous levels of B6 despite lacking neuropathy symptoms. Accuracy requires fasting 12 hours before blood draws, otherwise creating false elevations from recent vitamin consumption. More critically, she alerts listeners about biotin(Vitamin B7) interference with laboratory tests using biotin-streptavidin techniques. High-dose biotin supplements are often used in hair and nail health growth formulas. This can falsely alter tests for thyroid hormones, vitamin D, sex hormones, cortisol and dangerously, troponin levels that diagnose heart attacks. This could lead to missed myocardial infarctions in emergency rooms, potentially causing fatal outcomes.
• Dr. Dawn takes a call from Richard seeking information about a previous radio program guest. She guides him to use on-line resources at ksqd.org to find program details, pivoting into praise for libraries as community centers offering far more than internet access. She emphasizes libraries provide serendipitous discovery that algorithms can't match, encouraging people to explore their local library systems for events, historical collections, and personal assistance from knowledgeable librarians eager to help visitors navigate both physical and digital resources.
• She discusses the concerning trend of giving melatonin to children, calling it "the Grinch that stole children's bedtime." While used prescription-only for severe developmental disorders in Denmark and EU countries, American children receive melatonin gummies regularly, with one in five preteens using it occasionally. Dr. Dawn explains melatonin is a hormone affecting pancreas, heart, fat tissue, and reproductive organs still developing in children. Supplemental doses create blood levels 10 times higher than natural peaks, representing an uncontrolled medical experiment on developing brains and bodies. Poison control calls for melatonin ingestion increased 530% between 2012-2021, with one tragic case involving a three-month-old death where 20 melatonin bottles were found in the home.
• Dr. Dawn concludes by debunking food expiration date myths, explaining that Americans waste a third of food ($7 billion annually) due to misunderstanding labels. Most shelf-stable foods simply degrade in quality rather than becoming dangerous after printed dates. She notes acidic dairy products like yogurt resist bacterial contamination due to protective bacteria,and even surface mold can be scraped off safely. However, she emphasizes trusting expiration dates on lunch meats and deli products, which pose real listeria risks when stored improperly. California will soon simplify labeling laws to reduce confusion between quality and safety dates.