Marijuana plants are displayed at a shop in San Francisco, Monday, March 20, 2023. (AP Photo / Jeff Chiu, File)

Alcohol is still more widely used, but 2022 was the first time this intensive level of marijuana use overtook daily and near-daily drinking, said the study’s author.

(David Mark / Pixabay)

Employment levels in Chicago and beyond have rebounded since the COVID-19 pandemic, but a new report has found teens and young adults across the city, particularly those of color, are still struggling to find consistent work.

A section of a human brain with Alzheimer’s disease is displayed at the Museum of Neuroanatomy at the University at Buffalo, in Buffalo, N.Y., Oct. 7, 2003. (AP Photo / David Duprey, File)

The vast majority of Alzheimer’s cases occur after age 65. But research published Monday suggests that for people who carry not one but two copies of the gene, it’s more than a risk factor, it’s an underlying cause of the mind-robbing disease.

Methane plumes observed by Carbon Mapper during aerial surveys at a landfill in Georgia. (Carbon Mapper via CNN Newsource)

Landfills tend to be a less well-known methane source, but they also have a huge impact, estimated at around 20% of global human-caused methane emissions.

There is no safe level of lead in drinking water, according to the U.S. Environmental Protection Agency. (Antonio Perez / Chicago Tribune / Getty Images via CNN Newsource)

Researchers found about 75% of residential city blocks in Chicago had lead-contaminated water. And more than two-thirds children under the age of 6 in Chicago live on these blocks and may be exposed to lead-contaminated water.

File photo of an emergency room sign. (WTTW News)

While researchers haven’t yet pinpointed the cause for the decreasing age, they caution it indicates a need for awareness from both patients and responders.

FILE - Plastic bottles and other garbage are seen next to a beach at Fiumicino, Italy, near Rome, Saturday, Aug. 15, 2020. (Andrew Medichini / AP Photo, File)

We breathe, eat and drink tiny particles of plastic. But are these minuscule specks in the body harmless, dangerous or somewhere in between?

Maternal mental health disorders such as suicide and opioid overdose are responsible for nearly one in four maternal deaths in the U.S., research shows. (Prasit photo / Moment RF / Getty Images / File via CNN Newsource)

The maternal mortality rate in the U.S. is two- to threefold greater than in other high-income countries, and it has only increased in recent years, according to a new evidence review.

File photo of an at-home COVID-19 test. (Annie Spratt / Unsplash)

Millions of people deal with COVID-19 symptoms long after their initial infections. Two new studies give a better look at the burden from this health problem that doctors say often goes under the radar.

Using a glass or stainless steel container is a safer way to consume water, experts say. (Clara Margais / dpa / picture alliance / Getty Images)
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Nanoplastics are so teeny they can migrate through the tissues of the digestive tract or lungs into the bloodstream, distributing potentially harmful synthetic chemicals throughout the body and into cells, experts say.

(MD Duran / Unsplash)

A growing number of students are working to earn as many college credits as possible while they are still in high school. But even as the popularity continues to grow for “dual credit” offerings, a new study shows disparities between racial, economic and geographic groups are also widening.

(Pexels / Kei Scampa)

The state still has a long way to go toward ensuring that all Illinois residents can have a safe and healthy pregnancy, Illinois Department of Public Health Director Dr. Sameer Vohra said in a press release.

This 2020 photo provided by the British Antarctic Survey shows the Thwaites glacier in Antarctica. No matter how much the world cuts back on carbon emissions, a key and sizable chunk of Antarctica is essentially doomed to an “unavoidable” melt, a new study found. (David Vaughan / British Antarctic Survey via AP, File)

Though the full melt will take hundreds of years, slowly adding nearly 6 feet to sea levels, it will be enough to reshape where and how people live in the future, the study’s lead author said.

(Credit: gorodenkoff / iStockphoto / Getty Images)

Researchers found about 40% of the brains studied had developed some of the earliest signs of the disease, which is associated with repeated head trauma. The study also includes what researchers believe to be the first case of an American female athlete diagnosed with the disease.

(Thanasis Zovoilis / Digital Vision / Getty Images)

Having anywhere from one to four hours of screen time per day at age 1 is linked with higher risks of developmental delays in communication, fine motor, problem-solving and personal and social skills by age 2, according to the study.

(WTTW News)

The Northwestern Medicine Comprehensive COVID-19 Center released the results of a study on 1,200 long COVID patients. According the CDC, one in five COVID-19 patients experienced long COVID three months later, about 150 million adults in the U.S.