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Signal vs. Noise: Health

SIGNAL vs. NOISE: Health

Zara

📅 Wednesday & Saturday

Evidence-based health analysis. Zara reads every clinical trial — not just the headlines. She scores the evidence, calls out bad methodology, and tells you what the studies actually show.

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Episodes

AI Therapy Chatbots: 1 in 6 Americans Already Using Them — Are They Safe?

Nearly one in six Americans used an AI chatbot for mental health support in the past year — before a single federal safeguard exists. On April 22, 2026, the AMA sent urgent letters to Congress warning

Mercury Rollback: The 90% Reduction Nobody's Talking About

On February 20, 2026, the EPA repealed Biden-era Mercury and Air Toxics Standards — and the public health debate that followed misses the most important number. Zara cuts through the politics to ask:

National Health Insurance: 20 Million Americans, One Expiration Date

The U.S. health insurance debate just got a concrete deadline: enhanced ACA subsidies expired, and estimates suggest over 20 million Americans are already feeling the cost. Zara cuts through the polit

Corporate Disease: How Industry Buried the Science on Your Health

A landmark April 2026 NEJM study exposed the 'corporate playbook' — how tobacco, pharma, fossil fuel, food, and chemical industries systematically buried science to protect profits. Zara breaks down e

Pain Treatment in 2026: Who's Suffering So Addicts Don't?

Opioid overdose deaths dropped roughly 32% from peak — so why are palliative care doctors reporting they can't get pain meds for dying patients? Zara cuts through the crisis narrative to look at who t

Measles Is Back: 2,255 Cases — What the Data Says About Why

The U.S. recorded 2,255 confirmed measles cases in 2025 — nearly eight times more than 2024 — and outbreaks are still running in 2026. Zara cuts through the political noise to explain what the data ac

GLP-1 Drugs: Beyond Weight Loss — What the 2026 Evidence Actually Shows

Ozempic and Wegovy started as diabetes drugs. Now they're being approved for heart failure, liver disease, sleep apnea, and possibly Alzheimer's. Zara cuts through the hype and the fear to score what

Gender-Affirming Care for Minors: What the Science Actually Says

This week a federal judge vacated HHS Secretary RFK Jr.'s declaration that gender-affirming care for minors is unsafe. But what does the actual research show? Zara reads the studies — the European dat

Hep B Birth Dose: Is the CDC's 2025 Policy Shift a Dangerous Gamble?

In December 2025, the CDC quietly ended a 34-year universal hepatitis B birth dose recommendation. The American Academy of Pediatrics is still telling doctors to ignore it. Zara reads the actual ACIP

Vaccines: A Federal Judge Just Blocked RFK Jr. — Here's What the Science Says

This week a federal judge issued a preliminary injunction blocking RFK Jr.'s overhaul of the childhood immunization schedule. Zara cuts through the politics to ask the question that actually matters:

Melatonin: 70 Million Americans Take It Wrong — The 3 Mistakes Costing You Sleep

Seventy million Americans take melatonin. Most are taking 10 to 17 times the clinical dose, at the wrong time, for the wrong reason — and a 2025 study presented at the American Heart Association is ra

Trailer: Signal vs. Noise — Health

Meet Zara. She reads every clinical trial so you do not have to. Every claim gets an evidence score. No supplement sponsors. No brand partnerships. No affiliate links. Subscribe wherever you listen.

Topics Covered

Sleep sciencenutritionsupplementsmental healthlongevityexercise sciencegut healthclinical trials