Monsanto Should Pay $857 Million in PCB Case, Jury Finds

Students and parent volunteers from a school in Washington State said in a lawsuit that they had become sick after being exposed to chemicals known as PCBs that had dripped from light fixtures.

What to Know About the Effects of Ketamine

Matthew Perry’s death was attributed to the effects of high levels of the anesthetic drug, which is increasingly used to treat depression.

Doctors on the Use of Medical Cannabis

Two physicians respond to a front-page article. Also: The children in Gaza; reviving local news; a divide in texting.

Hair-Loss TikTok Offers Community, and Dubious Recommendations

Hair-loss influencers on TikTok say they are destigmatizing a common insecurity. Critics say they are cashing in on a vulnerable audience.

New Drugs Can Fix Teenage Obesity, but Young People Don’t Get Them

Pediatricians are hesitating to prescribe medicines like Wegovy, citing their newness and uncertainties around them.

Do Sleeping Pills Work? A Guide to Insomnia Drugs and Their Risks

A guide to the different types of medications for treating insomnia, their risks and when experts recommend using them.

New Sickle Cell Therapies Will Be Out of Reach Where They Are Needed Most

There is no clear path for African patients to get access to the treatments, which have multimillion-dollar price tags and are highly complex to manufacture and deliver.

F.D.A. Approves Sickle Cell Treatments, Including One That Uses CRISPR

People with the genetic disease have new opportunities to eliminate their symptoms, but the treatments come with obstacles that limit its reach.

Why We’re Stuck in a Constant Cycle of Drug Shortages

A few simple solutions could save lives and ease the struggles of countless Americans.

Years After Monsanto Deal, Bayer’s Roundup Bills Keep Piling Up

Juries recently awarded plaintiffs more than $2 billion in damages tied to Roundup, the weedkiller that has been linked to cancer. Bayer is fighting back.