Injectable peptides are all the rage in Los Angeles and other places where wellness is an increasing focus, with testimonials flooding TikTok and other social-media sites. Yet while regulators may soon lift restrictions on making these compounds, there remains scant evidence of their safety or efficacy, writes Sumathi Reddy.

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Transcatheter aortic valve replacement, or TAVR, is gaining popularity as a simpler alternative to open heart surgery. But some patients are finding that ​their new valve doesn’t work as well or last as long as they hoped.

Health-tech startup NewDays is betting that AI can empower people with dementia to seek out human contact, alleviating the isolation that often comes with—and exacerbates—cognitive decline, writes Julie Jargon.

The Trump administration is reclassifying marijuana as a less dangerous drug, a significant policy shift that could make it easier to buy and sell pot—and reward cannabis investors. Here’s what to know about marijuana’s health risks.

The FDA approved the first-ever gene therapy to restore hearing. Regeneron Pharmaceuticals’ Otarmeni is designed to treat children born deaf due to a rare condition. The drug improved hearing in 11 of 12 children in a clinical trial.

Medicare will extend a short-term program to pay for weight-loss drugs, guaranteeing access to the medications will continue for seniors next year. The decision comes after insurers signaled that they didn’t initially plan to join a separate, longer-term program.

New drugs for pancreatic cancer show remarkable promise for treating the deadly disease. New data from two drugs—a BioNTech mRNA vaccine and a RevMed drug—showed it might be possible to keep the disease in check for longer than ever before.

A long elusive lung cancer target may finally be yielding to new drugs. Researchers presented promising early results of clinical trials of two experimental drugs targeting a gene called KRAS, one of the most common and challenging drivers of human cancers.

The monthly cash-pay price for weight-loss pills in Amazon’s new GLP-1 program, which offers patients Novo Nordisk’s Wegovy and Eli Lilly’s Foundayo GLP-1 pills through its One Medical primary care arm.

• Will bargain-basement telehealth visits help pharma drive drug scripts? (STAT News)

• She wanted a “free birth.” It put her and her baby in grave danger. (The New York Times)

• The snuggle is real: What happens when you can’t fall asleep without your partner? (The Guardian)

The Health newsletter is your weekly guide to all the news that affects your health and well-being. This edition was curated and edited by Conor Grant—send him feedback or questions at conor.grant@wsj.com (if you’re reading this in your inbox, you can just hit reply). Got a tip for us? Here’s how to submit.