Daily Science Briefing · 24 May 2026 · 4 min

Vitamin D2 Backfires, Alzheimer's Enzyme & Light-Speed AI

New science reveals vitamin D2 supplements suppress the more active D3 form, while a discovered enzyme slashes Alzheimer's plaques and Penn physicists build light-matter particles that run AI faster and cheaper. Six stories spanning nutrition, neuroscience, psychiatry, and physics.

Daily Science Briefing
Now Playing
Vitamin D2 Backfires, Alzheimer's Enzyme & Light-Speed AI

Audio is available on Spreaker — see link below.

What's covered

Vitamin D2 Supplement Paradox

A supplement millions of people take to protect their health may actually be working against them. New findings show that vitamin D2, one of the most commonly recommended forms of the vitamin, suppresses D3 in the body.

Listen now →

B12 Guidelines Brain Risk Gap

The D2 finding isn't isolated. It's part of a broader pattern that's been sharpening in nutrition science.

Listen now →

Alzheimer's IDOL Enzyme Breakthrough

On the Alzheimer's front, two separate findings from May twentieth are worth holding together. The first identifies an enzyme called IDOL as a potential trigger.

Listen now →

Psychedelic Depression Treatment No Hallucinations

A different kind of therapeutic target is emerging from UC Davis. Researchers there engineered compounds that activate serotonin receptors, the same receptors involved in the therapeutic effects of psychedelics, without producing hallucinations.

Listen now →

Light-Based AI Computing Polaritons

Stepping back from biology for a moment, a physics development from Penn deserves attention. Researchers there created hybrid particles called polaritons that combine light and matter.

Listen now →

Deep Fission IPO Technical Uncertainty

One more item worth flagging: nuclear startup Deep Fission is pursuing a one hundred fifty-seven million dollar Nasdaq IPO. The company's approach involves drilling deep boreholes for small reactors.

Listen now →

Chapter summary auto-generated from the verified script. Listen to the full episode for the complete content.

More episodes

From Daily Science Briefing