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- Broadcast from KSQD, Santa Cruz on 7-02-2026: Dr. Dawn devotes the first half of the show to a nuanced defense of GLP-1 receptor agonists, arguing the polarized debate treats obesity as a moral failure rather than a physiological one. She recounts the "Marilyn Monroe dress" moment that transformed semaglutide from diabetes drug into elite cosmetic tool, and pushes back on the puritanical framing that behavior change must be earned rather than pharmacologically enabled—noting we don't apply this logic to antihypertensives or statins. Dr. Dawn catalogs visceral fat as a genuine endocrine organ producing over 17 hormones, most of which drive self-perpetuating growth: leptin (this satiety hormone at high levels disables it's own brain receptor), IL-6, TNF-alpha (blocks insulin), resistin (increases insulin resistance and inflammation), PAI-2 (blocks clot breakdown, raising cardiovascular risk), retinol-binding protein 4 (impairs muscle glucose uptake), chemerin (recruits macrophages and directs fat to the belly), and visfatin. Only adiponectin declines with rising visceral fat. It improves insulin sensitivity, suppresses hepatic gluconeogenesis, and blocks IL-6 . Dr. Dawn describes GLP-1's neurobiological action: receptors in the hypothalamus, brainstem, hippocampus, and mesolimbic reward system, with the drugs quieting the brain's salience network so food loses its intrusive pull. Taste buds shift, sweet and salty become muted, and reward circuits stop firing on cheat foods—creating a window during which behavioral change becomes possible. Dr. Dawn frames group support through self-determination theory (autonomy, competence, relatedness), arguing GLP-1s create the cognitive bandwidth for behavioral programs to succeed. A Tufts study of patients discontinuing after 10% weight loss found those enrolled in behavioral support programs regained about three times less weight than usual-care controls, outperforming even medically-tailored meal plans. Group engagement doubled the time patients stayed on the medication. A November 2025 Nature study piggybacked on deep brain stimulation research at Penn. Electrodes implanted in the nucleus accumbens of post-bariatric patients recorded low-frequency brain activity surges during food-noise episodes on drug free patients. A third participant who started tirzepatide showed complete silencing of that signature—the first direct electrical confirmation that GLP-1s suppresses compulsive food thoughts in the reward center. RNA sequencing of adipose tissue from 25 obese patients before and after bariatric surgery, compared to 24 lean controls, revealed persistent epigenetic changes even after weight loss. Lipid-associated inflammatory macrophages drop but retain some of their pro-inflammatory epigenetics, explaining the well-known slippery slope back to obesity—and why Dr. Dawn suggests GLP-1s may work best as intermittent tools when behavioral maintenance starts slipping. An emailer asks about long-term smoking versus vaping data. Dr. Dawn notes there is no long-term data yet, but short-term evidence shows e-cigarettes contain nicotine, propylene glycol, reactive oxygen species, and nitrosamines, producing spirometry readings similar to mild COPD in otherwise-healthy vapers. Vaping over a year raises stroke relative risk by 1.62 and nearly doubles MI risk, and combining smoking and vaping produces a multiplicative rather than additive harm. Data on cancer will take decades to emerge. Researchers built a functioning underwater breathing apparatus for cockroaches with electrodes attached to brain and sensory organs allowing remote-controlled direction while preserving natural obstacle-navigation autonomy. The 10mm × 10mm sponge-based oxygen tank uses magnesium dioxide catalyzing hydrogen peroxide breakdown, delivering oxygen through silicone tubes to the roach's spiracles for up to three hours underwater. Deployemenet will improve search-and-rescue in flooded and collapsed structures where dogs cannot reach. A Science Advances paper from Yong Lin Kong's lab at Rice University describes 3D-printing electronic circuits directly onto living tissue. Researchers achieved microwave-focused annealing at sub-200-micrometer resolution. By selectively heating only conductive ink particles (copper, silver, gold) without damaging surrounding tissue, the technique enables printing circuits onto 3D-printed heart valves, tracheas, and ear scaffolds, potentially creating combined graft-and-sensor implants, ingestible diagnostic devices, and perhaps even decorative electronic tattoos. A single-shot reformulation of zanamivir (originally the inhaled flu drug Relenza) provided 76.1% flu protection in a 5,000-participant trial—far exceeding the roughly 40-45% offered by annual flu vaccines. Because zanamivir targets neuraminidase in a way that inactivates it if the virus tries to mutate around the drug, trapping newly-made viral copies inside their host cells, this approach works across all flu strains and could bypass the annual guessing game of trivalent vaccine formulation.
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