Health

In the 1980s, when government lagged in its response to the disease, he solicited private support for prevention and treatment.

By Sam Roberts

Scientists cannot say for certain, but new research suggests that different people’s brains respond similarly when looking at a particular hue.

By Kenneth Chang

He started fighting wildfires as a teenager. After inhaling smoke on the front lines for six seasons, he faced an impossible choice.

By Hannah Dreier

Scammers are using A.I. tools to make it look as if medical professionals are promoting dubious health care products.

By Steven Lee Myers, Alice Callahan and Teddy Rosenbluth

Gov. Kathy Hochul of New York plans to authorize pharmacists to provide the vaccine to almost anyone who wants it without a prescription.

By Joseph Goldstein

A three-hour hearing before the Senate Finance Committee revealed that the health secretary was on uncertain ground even with some Republicans who voted to confirm him.

By Sheryl Gay Stolberg and Megan Mineiro

Neurologists are exploring medications that would help the brain recover after a stroke or traumatic injury.

By Rachel E. Gross

The health secretary fired the original committee members in June, replacing them with some who have been critical of vaccines.

By Apoorva Mandavilli, Dani Blum and Christina Jewett

California, Oregon and Washington said they would work together to review scientific data, saying the C.D.C. could no longer be trusted. But Florida said it would abolish all vaccine mandates.

By Emily Baumgaertner Nunn

In the world of presidential health, distrust and speculation run so rampant that even Mr. Trump’s online assurance that he was fine was immediately explained away as part of a cover-up.

By Katie Rogers

In a post on Truth Social, the president suggested that the C.D.C. was being “ripped apart” over a question that was answered long ago.

By Apoorva Mandavilli and Carl Zimmer

Changes in screening recommendations over a decade ago may have inadvertently resulted in later diagnosis of the most common cancer in men, a new study has found.

By Roni Caryn Rabin

Authoritarians have long feared and suppressed science as a rival for social influence. Experts see President Trump as borrowing some of their tactics.

By William J. Broad

After she lost her son to an overdose, Serena Fallon went on a quest to hold someone accountable for his death.

By Michael Corkery and Dave Sanders

Robert F. Kennedy Jr.’s assault may have dealt lasting damage to the agency, experts fear, with harsh consequences for public health.

By Apoorva Mandavilli

Patients are flooding medical practices with reports of the telltale signs of Covid and questions about whether they will be able to get vaccinated.

By Samantha Latson

A network dedicated to early phase trials of treatments for children with brain cancer will be phased out.

By Nina Agrawal

State laws and regulatory chaos are driving the country’s largest pharmacy chains to require prescriptions or hold back altogether unless a C.D.C. panel acts.

By Maggie Astor and Dani Blum

After six months of turmoil, the loss of the new director and a round of high-profile resignations mark a new low, some employees said.

By Apoorva Mandavilli

The director, Susan Monarez, declined to fire agency leaders or to accept all recommendations from a vaccine advisory panel made over by Mr. Kennedy, according to people with knowledge of the events.

By Sheryl Gay Stolberg, Apoorva Mandavilli and Christina Jewett

A pilot program in six states will use a tactic employed by private insurers that has been heavily criticized for delaying and denying medical care.

By Reed Abelson and Teddy Rosenbluth

Susan Monarez was said to have refused to adopt Health Secretary Robert F. Kennedy Jr.’s stance on vaccination policy. A lawyer for Dr. Monarez said the firing was “legally deficient.”

By Sheryl Gay Stolberg, Apoorva Mandavilli and Christina Jewett

The agency’s fall recommendations underscore the goals of Health Secretary Robert F. Kennedy Jr. to limit access to the vaccines, which he has long opposed.

By Christina Jewett and Jacey Fortin

A new study reveals some of the crucial molecular steps on the path to bipedalism.

By Carl Zimmer

The patient had traveled to Central America, where an outbreak of myiasis, an infection by screwworm larvae, has been ravaging livestock.

By Alexa Robles-Gil

Family estrangement can bring up big, difficult emotions, and it’s not always about parents and children.

By Catherine Pearson

San Francisco, Philadelphia and others are retreating from “harm reduction” strategies that have helped reduce deaths but which critics, including Trump, say have contributed to pervasive public drug use.

By Jan Hoffman

Health issues prevented the women, who were in their 80s, from climbing out, officials said. They became unresponsive after overheating and developing hyperthermia.

By Adeel Hassan

President Trump’s planned pharmaceutical tariffs threaten to hit many of the most common and well-known drugs that Americans take.

By Rebecca Robbins and Jonathan Corum

Panel members have been given a broad mandate, despite pleas from C.D.C. employees asking Robert F. Kennedy Jr. to stop spreading misinformation.

By Christina Jewett