New tests of blood and spinal fluid could help doctors quickly identify patients who would most benefit from treatment. Andrew Brookes/Getty Images hide caption

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Yale cognitive neuroscientist Nick Turk-Browne works with a baby and parent during a brain scan. 160/90 hide caption
Why don't we remember being babies? Brain scans reveal new clues
Eli Lilly is selling Zepbound in vials (rather than injector pens) for a discount. Tetra Images/Tetra images RF/Getty Images hide caption
Consumers can buy Zepbound and Wegovy direct from drugmakers if they pay cash
Dr. Steven Lamm leads a comprehensive center for men's health at NYU Langone medical center in New York City. Ashley Milne-Tyte for NPR hide caption
Greater attention to men's health could bridge life expectancy gap, researchers say
Robert F. Kennedy Jr., President Trump's nominee to be Secretary of Health and Human Services, was on Capitol Hill in early January to meet with senators. Kevin Dietsch/Getty Images hide caption
RFK Jr. appears on his way to being Trump’s health secretary after a party-line vote
An illustration of the Vagus nerve, which is part of the autonomic nervous system. Sebastian Kaulitzki/Science Photo Library RF/Getty Images hide caption
U.S. Army Rangers fire an AT4 at a range on Camp Roberts, California. Stocktrek Images/Getty Images/Stocktrek Images hide caption
Several cats have gotten sick from bird flu from eating raw pet food or drinking raw milk. eclipse_images/iStockphoto/Getty Images hide caption
FDA moves to make all cigarettes less addictive with lower nicotine
An adult mouse is released from the lab into a semi-natural outdoor enclosure. These are its first steps out of an artificial lab environment into a dynamic, realistic ecosystem. Daniel Chang Kuo hide caption
Survival of the luckiest - Mix 2
Zebrafish larvae through a microscope in a laboratory at the Pasteur Institute in Paris in 2023. CHRISTOPHE ARCHAMBAULT/AFP via Getty Images hide caption
The body's circadian rhythms are sensitive to many different types of changes — but especially to sunlight. Getty Creative hide caption
Night owl or early bird? Here's how your inner clock impacts your health
People who take on the Dry January challenge vow to go alcohol-free for the month. Iryna Imago/iStockphoto/Getty Images hide caption
Turkeys at a farm as California declares state of emergency to prevent new public health crisis on Bird flu in Pescadero, California, in December. Anadolu/via Getty Images hide caption
More than 100,000 people are on the list waiting for an organ in the U.S., according to government statistics. Living donors now can give parts of their lungs and livers, in addition to a kidney. Chinnapong/iStockphoto/Getty Images hide caption
The science behind the selfless act of donating a kidney to a stranger
Scientists are working hard to understand the impact of microplastic pollution in the environment and in human bodies. The research requires identifying and analyzing types of microplastics particles, which can range from 1 nanometer to 5 millimeters in size. Leonard Ortiz/MediaNews Group/Orange County Register/Getty Images hide caption
When someone you love is struggling emotionally, it can be hard to know what to say. Author Kelly Corrigan says using certain words can make a big difference. FilippoBacci/E+/Getty Images hide caption
Research shows after a break from weight lifting, your strength may return quickly thanks to phenomenon called muscle memory. EyeEm Mobile GmbH/iStockphoto/Getty Images hide caption
If you take a break from the gym during the holidays, muscle memory will help you
Young girl assisting a senior man in a wheelchair at park, Support, Help and Assistance, World Disability Day uniquepixel/iStockphoto/Getty Images hide caption
Practicing yoga from home with online instruction proved beneficial to a group of people with chronic low back pain. AndreyPopov/iStockphoto/Getty Images hide caption