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- Broadcast from KSQD, Santa Cruz on 7-30-2026: A type of coffee brewed from beans that have been altered by passage through the digestive track of civet cats is a delicacy in Southeast Asia. A Scientific Reports paper using gas chromatography analyzed Kopi Luwak (civet-processed coffee beans) versus fresh-picked beans, finding elevated caprylic and capric acids that carry the characteristic flavor notes found in dairy products. Dr. Manuel Esteller sampled and tested the blood, saliva, urine, and stool of the oldest human Maria Branyas Morera, who died last year at 117. Despite exceptionally short telomeres, she carried anti-inflammatory genetic variants seen in long-lived dogs, worms, and flies, and had unusually high Bifidobacterium levels—likely boosted by her three-daily-servings-of-yogurt habit. Dr. Dawn defends sunscreen use against Environmental Working Group scare campaigns, noting that concerns about absorption of sunscreen ingredients into blood remain theoretical while sunburn's melanoma link is well-established. She argues that a badly sunburned toddler starts a clock that can produce melanoma by the late teens. The FDA advisory committee is reviewing certain short amino acid chains popularly known as "peptides" for potential compounding-pharmacy production, covering proposed to treat ulcerative colitis, wound healing, insomnia, insulin resistance, migraines, and osteoporosis. Dr. Dawn flags that five to seven committee members have industry conflicts of interest, but argues that even flawed approval is preferable to the current gray market, where analysis shows vials contain only 4-28% of labeled content along with endotoxin and toluene contamination. She proposes surveillance tracking of prescribed peptides to catch adverse effects early, citing a foreign melanocortin nasal spray tanning product that caused rare nasal melanomas as a cautionary example. Utah State biochemists working with the Cas12a2 CRISPR enzyme discovered that instead of behaving as a precise gene-editor like Cas9, it goes into an indiscriminate DNA-shredding mode after recognizing its target RNA. By programming it to recognize RNA sequences uniquely activated in cancer cells (embryonic-development genes that shouldn't be running in adults), researchers destroyed only the cancer cells in tissue culture, potentially offering a way to eliminate small metastases without healthy tissue toxicity. Cancer patients who received a COVID-19 mRNA vaccine within 100 days of starting immune checkpoint inhibitor therapy showed dramatically improved outcomes, with median survival in advanced lung cancer rising from 20 to 37 months. Non-mRNA vaccines (flu, pneumonia) showed no such benefit. Lab work suggests the mRNA triggers type-1 interferon release that activates tumor-infiltrating immune cells and drives them to lymph nodes to train other immune cells against the tumor. Researchers redesigned a CD40 agonist antibody to bind multiple receptors simultaneously by clustering with a second antibody, stretching the cell surface and triggering a powerful immune response. In a 12-patient trial, injecting one tumor caused all tumors to shrink in six patients and produced complete remission in two—including a melanoma patient with dozens of leg tumors and a metastatic breast cancer patient whose lung and liver tumors resolved after skin injection. Two small trials of CAR natural killer cells—engineered like CAR T-cells but derived from donor umbilical cord blood and thus potentially available off-the-shelf—showed remarkable results in autoimmune disease. All 27 systemic lupus patients targeting the CD19 protein on autoantibody-producing cells showed improvement, with some remaining in remission at nearly two years. A single Shanghai patient with systemic sclerosis showed restoration of normal skin and blood vessel structure. A paradox has emerged in advanced prostate cancer: while blocking testosterone halts early tumor growth, cancer cells eventually adapt to low-androgen conditions such that flooding tissues with testosterone in advanced disease can actually halt tumor progression by triggering cellular redifferentiation. Separately, Dr. Dawn reviews conflicting evidence on Parkinson's risk from androgen deprivation therapy, singling out enzalutamide (Xtandi) as the most concerning drug due to blood-brain barrier penetration, and recommending darolutamide as the safest alternative with matching prostate efficacy but minimal CNS entry.
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