Health

Captive animals sometimes need a transfusion, but the typical approach to blood banking isn’t practical for zoos and aquariums. One veterinarian is testing a solution.

By Emily Anthes and Jamie Kelter Davis

Secretary of State Marco Rubio said the United States would negotiate agreements to deliver aid in new ways and would focus on the Western Hemisphere and Asia Pacific.

By Edward Wong

Robert F. Kennedy Jr. announced the firing of one of the groups that arrange U.S. organ donations, effectively closing it down — and sending a warning to others.

By Brian M. Rosenthal

Northeastern governors, like their peers in the West, want to shore up public health and issue a stamp of approval for vaccines.

By Joseph Goldstein

The guidelines, from California, Oregon, Washington and Hawaii, mirror those of major medical organizations. They were issued a day before an advisory panel was set to meet to review potential changes to federal recommendations.

By Emily Baumgaertner Nunn

At a Senate health committee hearing, Dr. Susan Monarez painted a picture of Health Secretary Robert F. Kennedy Jr. as a man wedded to his own ideology and uninterested in government scientists.

By Sheryl Gay Stolberg and Megan Mineiro

Susan Monarez is set to provide her first detailed account of her ouster in testimony before the Senate Health Committee on Wednesday.

By Sheryl Gay Stolberg

The taboo against pork is deeply entrenched in both religious traditions. But the prohibition is not absolute.

By Roni Caryn Rabin

Robert F. Kennedy Jr. has hired longtime vaccine safety skeptics and scientists who are critical of Covid shots and mandates to make immunization policy decisions for Americans.

By Amy Schoenfeld Walker and Lazaro Gamio

Committee members, some of whom are vaccine skeptics, are likely to recommend restricting the use of the shots at birth or delaying them until later in childhood.

By Apoorva Mandavilli

The committee, whose members were appointed by the health secretary and include vaccine skeptics, will meet on Thursday to review recommendations for several shots.

By Apoorva Mandavilli

The parasitic infection schistosomiasis affects an estimated 200 million people globally, many of them children. But campaigns to identify and treat it face formidable hurdles.

By Apoorva Mandavilli and Taiwo Aina

America’s cancer research system, which has helped save millions of lives, is under threat in one of its most productive moments.

By Jonathan Mahler

After climbing in the business world, she received a dire diagnosis, spurring her to found leading nonprofit groups to promote early detection and research.

By Sam Roberts

Regulators sent about 100 warning letters this week to drug advertisers, including to Hims & Hers, a major online provider of weight-loss drugs.

By Christina Jewett, Rebecca Robbins and Dani Blum

She co-founded the organization after she was outraged to learn that children were starving after World War I, when the British blocked aid to several countries.

By Elaine Louie

“Fit for Life,” which she wrote with her husband, was a best seller in the 1980s promoting good health ahead of weight loss. But doctors were critical.

By Clay Risen

His innovations, including homelike delivery rooms and birthing pools, were based on his belief that “human birth cannot work as long as a woman is thinking.”

By Adam Nossiter

Contraceptives bought by U.S.A.I.D. have been in limbo in a Belgian warehouse. The U.S. government said the products were destroyed, but local authorities found them.

By Jeanna Smialek, Stephanie Nolen and Edward Wong

The agency plans to highlight possible links between the shots and accounts of deaths involving children and birth defects to an influential C.D.C. panel meeting next week.

By Christina Jewett and Apoorva Mandavilli

We asked couples therapists to share the magic words that can strengthen bonds, even in the middle of a disagreement.

By Catherine Pearson

He gained a following for techniques, notably one known as mewing, that he said could help fix crooked teeth without surgery. The medical establishment disagreed.

By Richard Sandomir

Acute necrotizing encephalopathy, or A.N.E., can result from influenza or other infections, including Covid-19.

By Apoorva Mandavilli and Carolyn Fong

The birth control pills, IUDs and hormonal implants were purchased by U.S.A.I.D. for women in low-income countries. They had been in limbo in a Belgian warehouse after the U.S. cut much of its foreign aid.

By Stephanie Nolen, Jeanna Smialek and Edward Wong

The intent is to protect health care providers who send the pills to patients in states with abortion bans, and to reassure patients who fear they could be identified.

By Pam Belluck

Many winners of the annual Lasker Awards have gone on to win a Nobel Prize in medicine or other fields.

By Carl Zimmer and Gina Kolata

The health secretary has begun a full-on assault against vaccines but has taken a more restrained approach to pesticides and unhealthy foods, also MAHA priorities.

By Benjamin Mueller and Dani Blum

Behind the scenes, major pharmaceutical companies and Trump-tied billionaires are furiously lobbying in opposite directions over proposed anti-China measures.

By Rob Copeland and Rebecca Robbins

The administration is proposing a return to a 1990s-era policy that kept most drug ads off TV. That could dent the revenues of drugmakers and major networks.

By Rebecca Robbins, Christina Jewett and Dani Blum

A report from the White House outlines strategies to combat childhood chronic disease and attempts to set a MAHA agenda for the country.

The report, which follows a draft leaked last month, demonstrates both the ambitions and limits of Robert F. Kennedy Jr.’s “Make America Healthy Again” agenda.

By Dani Blum, Benjamin Mueller and Maggie Astor

Elizabeth Gilbert, the author of “Eat, Pray, Love,” delves into her struggle with an obsessive relationship in a new memoir.

By Christina Caron

A definitive diagnosis of chronic traumatic encephalopathy, or C.T.E., can only happen posthumously through a weeks-long process of removing, processing and studying brain tissue.

If the results are promising, veterinarians hope to give the shots to wild Hawaiian monk seals, which are endangered.

By Emily Anthes and Loren Elliott

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

Texas and New York are at the leading edge of an escalating states’ rights battle over the mailing of abortion pills to patients in states with bans.

By Pam Belluck

By promoting suspicions about the institutions he oversees, critics say Robert F. Kennedy Jr. is jeopardizing public health. He says he is pursuing transparency.

By Sheryl Gay Stolberg

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

The researcher and author Jean Twenge has a prescription for the harmful effects of screen time on children. If only parents would listen.

By Catherine Pearson

The upcoming U.S. Dietary Guidelines will instead be influenced by a competing study, favored by industry, which found that moderate alcohol consumption was healthy.

By Roni Caryn Rabin

Studies over the last decade of acetaminophen use in pregnancy — including a recent scientific review — have yielded mixed results but have not found a causal connection.

By Azeen Ghorayshi

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

During often tense exchanges, Health Secretary Robert F. Kennedy Jr. defended his positions on Covid vaccines, the Centers for Disease Control and Prevention and autism.

By Apoorva Mandavilli, Dani Blum, Christina Jewett and Reed Abelson

Two former agency leaders said the administration’s “hostility” toward vaccines had spread to the agency’s top ranks.

By Benjamin Mueller

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

The agency’s staff scientists pointed out how Covid was still unpredictable and posed a threat to toddlers, but the official decided to restrict shots only to children with risk factors.

By 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

The selection of Jim O’Neill, a former Silicon Valley executive, drew objections from Democrats, who noted his lack of medical or scientific training.

By Emily Anthes

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

It is not just a scourge of the Middle Ages. Plague still exists, though it is rare. Here’s what to look for and how to protect yourself.

By Emily Baumgaertner Nunn

For some cultures, the practice of cranial deformation may have offered individuals a path to privilege later in their lives.

By Franz Lidz

The conflict that has put rebels in control of much of the east of the country has left victims with no legal recourse and dismantled many of the clinics that offered care.

By Stephanie Nolen

Lawmakers allocated $6 billion this fiscal year for PEPFAR, the H.I.V. prevention and treatment program, but the administration has indicated it will release less than half of that.

By Stephanie Nolen

The court’s order was fractured, with the justices splitting over whether individual cancellations and the policy behind them could be challenged in a federal trial court.

By Adam Liptak

These coaches help professional athletes achieve their goals through mental preparation — and they could help you, too.

By Christina Caron

To understand the virus’s re-emergence in America in 2025, some experts are looking to a past epidemic that had a high death rate in Philadelphia.

By Gina Kolata

A small, preliminary study found that marathoners were much more likely to have precancerous growths. Experts aren’t sure why.

By Roni Caryn Rabin

The administration has pledged to end support for Housing First, the approach behind the V.A.’s greatest housing success story.

By Ellen Barry

Chikungunya, which can disable victims for years, is spreading rapidly, including in China, France and other places that have not seen major outbreaks before.

By Stephanie Nolen

Medicaid pays for most of the in-home care that lets disabled Americans live independently. Will coming cuts put that care in jeopardy?

By Marcela Valdes

Simply giving money to poor families at certain times reduced deaths among young children by nearly half, a new study found.

By Apoorva Mandavilli

The U.S. Forest Service has been sending out crews to fight fires without the recommended masks for decades. Hannah Dreier, a New York Times investigative reporter, reveals the dangerous and sometimes deadly repercussions of sending firefighters into the field unprotected.

By Hannah Dreier, Christina Thornell, Gabriel Blanco, Coleman Lowndes, Stephanie Swart, June Kim, Lauren McCarthy and Nikolay Nikolov

The U.S. Forest Service has fought decades of efforts to better protect its crews — sending them into smoke without masks or warnings about the risks.

By Hannah Dreier

While thousands of people are bitten by venomous snakes in the United States each year, deaths are uncommon, according to the authorities.

By Rylee Kirk

A draft of an upcoming White House report on children’s health was not as harsh toward the agriculture industry as some of Robert F. Kennedy Jr.’s allies had hoped.

By Dani Blum, Benjamin Mueller and Alice Callahan

The dismantling of U.S.A.I.D. has disrupted the global supply chain that provides a therapeutic food, leaving thousands of malnourished children at risk of dying.

By Apoorva Mandavilli and Taiwo Aina

Oregon Health & Science University said the couple’s donation would be the largest single gift to a higher-learning institution in the United States.

By Neil Vigdor

Anti-vaccine groups had sought the revival of the task force.

By Apoorva Mandavilli

Manufacturing in Ireland has long helped many American drug companies pay lower taxes. But that strategy was designed for a world without President Trump’s tariffs.

By Rebecca Robbins

A guitarist in a death metal band was one of several people who found that personalized deep brain stimulation eased their pain and helped them reduce pain medication.

By Pam Belluck

International charities warned that, left unchecked, the disease’s spread might exacerbate similar outbreaks across the African region for weeks or months to come.

By Eve Sampson

In its campaign against “woke” science, the N.I.H. has closed down studies and programs focused on the gaps between racial and socioeconomic groups.

By Roni Caryn Rabin and Irena Hwang

The former Texas governor and Trump energy secretary has now dedicated his life to promoting the powerful psychedelic ibogaine.

By Robert Draper

The system for compensating people injured by vaccines needs significant reform. But the health secretary could alter it in ways that ultimately reduce vaccine access for everyone.

By Christina Jewett and Apoorva Mandavilli

As products like weed gummies proliferate, more children and teens are suffering symptoms including seizures and life-threatening breathing problems.

By Danielle Ivory, Julie Tate and Megan Twohey

Employees expressed horror at a shooting at the agency’s headquarters, and some said they viewed it as part of a pattern of threats and assaults on health workers.

By Apoorva Mandavilli