Health

A Covid-19 testing site in New York City on December 9. An estimated 27.6 percent of cases nationwide were caused by the XBB.1.5 variant this week, according to the CDC's most recent data.

What to Know About the 'Most Transmissible' Covid-19 Variant

XBB.1.5 is the fastest-spreading variant in the country, but it is not known to cause more severe illness than previous ones

Americans might choose more sustainable meals when beef items on menus are labeled "high climate impact."

Could Climate Impact Labels Change the Way We Eat?

Warnings on fast-food menus might make Americans think twice about choosing beef, a new study finds

Some experts say cannabis product packaging may appear similar to other snacks, which can confuse kids. 

More Kids Are Accidentally Eating Marijuana Edibles, Study Finds

Between 2017 and 2021, accidental cannabis ingestion in young children rose by 1,375 percent

Researchers are studying psilocybin therapy to treat conditions like alcohol addiction and major depressive disorder.

Adults Can Now Use Magic Mushrooms With Supervision in Oregon

State-certified facilitators will guide patients in hallucinogenic trips, which may help treat mental health conditions

Residents of Washington, D.C. wait in line to get Covid-19 test kits in December of 2021. The United States lagged behind other nations in testing during the first few months of the pandemic.

Six Lessons We’ve Learned From Covid That Will Help Us Fight the Next Pandemic

Public health experts weigh in on the steps America needs to take to stem a future outbreak

A growing movement is underway to halt chronic disease by protecting brains and bodies from the biological fallout of aging.

Could Getting Rid of Old Cells Help People Live Disease-Free for Longer?

Researchers are investigating medicines that selectively kill decrepit cells to promote healthy aging

Aedes aegypti can carry Zika, dengue, chikungunya and other viruses.

‘Super-Resistant’ Mosquitoes Can Survive Insecticides in Southeast Asia

Researchers found high numbers of a genetic mutation linked to this resilience in Cambodia and Vietnam

The Barbican Library in London, England, is becoming a warm bank this winter.

'Warm Banks' at U.K. Libraries Invite Locals to Get Cozy

To help with rising energy bills, they're providing everything from warm drinks to winter coats

More than 150 people die every day from synthetic opioids.

Scientists Create a Vaccine Against Fentanyl

Researchers hope the vaccine, which blocked the drug from entering rats’ brains, could help reduce overdoses in humans

Thirty-seven U.S. states and D.C. have laws permitting the use of medical marijuana.

For Pain Relief, Cannabis May Be No Better Than a Placebo

Previous research has shown the placebo effect can be extremely powerful, rivaling ibuprofen or morphine

When flushed, commercial toilets can spew airborne particles at speeds of up to 6.6 feet per second.

Here's What Really Happens When You Flush a Toilet

Using lasers and cameras, scientists visualized the plume of tiny, aerosolized particles ejected from commercial toilets during flushing

Denver banned the use of lead pipes in 1971, but tens of thousands of homes built before then contain them.

EPA Approves Denver’s $700 Million Plan to Remove Lead Pipes

Colorado's capital city will also get federal funding for the replacement project

A brain scan of a person with Alzheimer's disease

Second Death Tied to Experimental Alzheimer’s Treatment

While the new drug is seen as a breakthrough, these deaths highlight a possible risk to patients on blood thinners, experts say

Histoplasma under a microscope

Fungi That Cause Lung Infections May Be Spreading Across the U.S.

Doctors are likely to misdiagnose cases due to outdated maps of these fungi’s ranges

Close to two million Americans have Type 1 diabetes, according to the American Diabetes Association.

First Drug to Delay Type 1 Diabetes Approved by FDA

The treatment held off disease onset by an average of two years in a clinical trial, but it won’t be cheap

An illustration of human sperm.

Human Sperm Counts Declining Worldwide, Study Finds

Researchers disagree on whether the trend has implications for human fertility

New research suggests earbuds may be an affordable, low-stigma alternative to hearing aids for some people.

Are AirPods the Hearing Aids of the Future?

New research suggests that personal sound amplification products like earbuds may help some people hear better in certain scenarios

A sonogram of a human fetus. 

Doctors Treated a Child for a Genetic Disease Before She Was Born

Treating fetuses for the enzyme deficiency might prevent early disease progression

Rhea L. Combs (left) and Ava DuVernay (right) share a laugh in front of DuVernay’s portrait during the National Portrait Gallery's 2022 Portrait of a Nation Gala on Saturday, November 12, 2022.

See Stunning Portraits of Ava DuVernay, José Andrés and the Williams Sisters

The National Portrait Gallery's 2022 Portrait of a Nation Award honors seven changemakers, from Anthony Fauci to Clive Davis

Human red blood cells at 1,000 times magnification. 

Scientists Perform First Transfusions of Lab-Grown Blood

A clinical trial is testing how lab-grown cells might help patients with blood disorders and rare blood types

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