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- Broadcast from KSQD, Santa Cruz on 7-09-2026: Researchers refined a technique to reverse skin cell aging by about 30 years while preserving cellular identity. Exposing adult fibroblasts to Yamanaka factors—stopping before full reversion to pluripotent stem cells,reset the epigenetic clock and gene expression patterns to resemble much younger cells. The rejuvenated fibroblasts produced significantly more collagen, migrated faster to close artificial wounds, and showed reversal of gene expression patterns associated with Alzheimer's and cataracts. Since long-term epidemiologic data doesn't yet exist, Dr. Dawn follows up on last week's vaping question by exploring cancer mechanisms. Vaping aerosols impair DNA repair fidelity while triggering IL-6, IL-8, and TNF-alpha secretion. Nicotine-derived nitrosamines, reactive carbonyls (formaldehyde, acetaldehyde, acrolein) are generated when propylene glycol and vegetable glycerin are heated. Upregulated cytochrome P450 enzymes convert precarcinogens like benzopyrene into carcinogens. Mice exposed for 54 weeks developed lung adenocarcinomas in 22% and precancerous bladder hyperplasia in 57%, with markers matching those show predict lung cancer years before diagnosis. The Mexican Biobank—which includes over 40,000 samples from all 31 Mexican states revealed dramatic regional variation in drug-metabolism genes driven by Indigenous ancestry. In Chiapas, nearly 40% of the population carries two copies of a CYP2D6 variant reducing fentanyl metabolism, versus just 10% in Sinaloa. The SLCO1B1 variant hindering statin metabolism is found in over 15% of Yucatán residents., where 8 million Mexicans take statins. Dr. Dawn discusses both the promise and potential dark side of population genetic testing, including UK plans to genotype all children at birth for inborn errors of metabolism. Dr. Dawn briefly revisits the recent Indian study showing conch-shell blowing reduces sleep apnea by 34%, comparing it to earlier didgeridoo research, both of which strengthen airway muscles through forced-blowing exercises. A caller from Capitola recovering from non-Hodgkin's lymphoma near the L5 nerve asks about Japanese Kampo medicine formulas (Goshajinkigan, Yokukansan) for post-treatment nerve pain. Dr. Dawn suggests the pain likely originates from scar tissue tethering the nerve, and recommends consulting the Oriental Medicine Doctor program at Five Branches in Santa Cruz where faculty can advise on herbal formulas that trace back thousands of years through cultural exchange between China and Japan. Dr. Dawn explains Lp(a):lipoprotein(a), a small protein string attached to LDL particles that promotes clumping and clotting, is a genetically-determined coronary artery disease and stroke risk factor invisible to standard lipid panels. Levels of 250 particles double coronary risk and 350 particles triple it. Less than 75 is normal. Two new pharmaceutical strategies are in development to reduce Lp(a) : antisense oligonucleotides (single-stranded RNA that recruits RNase H to cleave target mRNA) and small interfering RNA (double-stranded RNA that triggers destruction of matching mRNA). Pelacarsen, a monthly injection in Phase 3 trials, reduces Lp(a) by 80%. These gene-silencing platforms open therapeutic possibilities for previously undruggable orphan diseases. Vitamin K2 is produced in the gut microbiome. MK-4 is most common in humans. Dr. Dawn recommends MK7 for stabilizing coronary calcium plaques and directing calcium into bone. A study of hepatitis B and C patients found MK4 to be protective in hepatocellular carcinoma. HCC developed in 2 of 21 MK-4-treated patients versus 9 of 19 controls, with a risk ratio of 0.2. MK-4 activates protein kinase A in vitro, inhibits HCC invasiveness, and restores apoptosis signaling that cancer cells normally block. Dr. Dawn recommends a couple milligrams of MK-4 daily for anyone with cirrhosis or prior hepatitis B or C infection.
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