A newly published study by Common Sense Media reveals the extent of gambling’s appeal to and risks for boys, especially online. The research, conducted in July 2025, surveyed 1,017 boys between the ages of eleven and seventeen across the United States, and found that 36 percent of them had gambled in 2024.

While 14 percent of the participants said they’d actively searched for betting opportunities on the Internet, over half of the gambling content they encountered was passive—it appeared in the broadcasts or live-streams of sporting events they watched, showed up in ads in the YouTube video accounts they follow, “just started showing up” in their social media feeds, or was shared with them by friends. Perhaps most surprisingly, nearly two-thirds of boys who gambled placed bets and used other gambling-like systems in the video games they played, making this the most widespread form of online gambling reported in the study.

People who naturally stay up late may be putting their hearts under added strain as they age. A large study tracking more than 300,000 adults found that middle-aged and older night owls had poorer overall heart health and a higher risk of heart attack and stroke than those who were active earlier in the day, with the effect especially pronounced in women. Much of this elevated risk appeared to stem from lifestyle factors common among evening types, including smoking and inadequate sleep.

Men start developing heart disease earlier than women, with risks rising faster beginning around age 35, according to long-term research. The difference is driven mainly by coronary heart disease, not stroke or heart failure. Traditional risk factors explain only part of the gap. The findings suggest earlier screening could help catch problems before serious damage occurs.

A thirteen-year-old in Hacienda Heights, California, has created a computer device that pairs with a mobile app to detect when someone has fallen. Kevin Tang was prompted to develop Fallguard when his own grandmother and a friend’s grandparent separately suffered debilitating falls that went undetected for long periods. Using Google’s MediaPipe artificial intelligence (AI) library, Kevin devised a way to connect a camera to the computer and mobile app, which can be installed on multiple phones without the need for cellular service or messaging fees.

Fallguard won Kevin first place at the 2025 3M Young Scientist Challenge last October, which came with an award of $25,000. He’s already reinvested part of his cash prize toward improving and growing the project. And while the money is nice, the effort that went into building Fallguard is what Kevin is most proud of. “I just kept working until I had a final product,” he said.

A large, decades-long study suggests that signs of ADHD in childhood may have consequences that extend well beyond school and behavior. Researchers followed nearly 11,000 people from childhood into midlife and found that those with strong ADHD traits at age 10 were more likely to experience multiple physical health problems and health-related disability by their mid-40s.

Scientists at Stanford Medicine have discovered a treatment that can reverse cartilage loss in aging joints and even prevent arthritis after knee injuries. By blocking a protein linked to aging, the therapy restored healthy, shock-absorbing cartilage in old mice and injured joints, dramatically improving movement and joint function. Human cartilage samples from knee replacement surgeries also began regenerating when exposed to the treatment.

A survey from online loan service LendingTree released in December revealed an alarming trend: Among the more than 2,000 people who responded, 27 percent said that they’d deliberately not scanned items at retail self-checkout stations. This is up from 15 percent just two years ago. The main reason for the theft they reported was that essential items have become unaffordable (47 percent) and that prices have increased too much due to recent tariffs (46 percent). Over half of those who admitted to self-checkout theft said they’d probably do it again.

These motivations support recent data from the Consumer Food Insights Report (CFI), which found that the household food insecurity rate rose from 13.3 percent in October to 16 percent in November, the largest increase in all of 2025. (Food insecurity is when people don’t have enough to eat and aren’t sure where their next meal is coming from.) But while it’s tempting to think of shoplifting as a victimless crime, especially in tough economic times, retailers estimate that they’ll lose over $47 billion to shoplifting in 2025 alone.

A major new scientific review brings reassuring news for expectant parents: using acetaminophen, commonly known as Tylenol, during pregnancy does not increase a child’s risk of autism, ADHD, or intellectual disability. Researchers analyzed 43 high-quality studies, including powerful sibling comparisons that help separate medication effects from genetics and family environment. Earlier warnings appear to have been driven by underlying maternal health factors such as fever or pain rather than the medication itself.

MIT engineers have developed a pill that can wirelessly report when it’s been swallowed. Inside the capsule is a biodegradable antenna that sends a signal within minutes of ingestion, then safely dissolves. The system is designed to work with existing medications and could help doctors track adherence for high-risk patients. Researchers hope it will prevent missed doses that can lead to serious health consequences.

Looking forward to being on your own when you start college? Independence is one of the biggest draws of life after high school, as a recent survey conducted by media website SheKnows reveals: 95 percent of its Teen Council members said they were most looking forward to “freedom” when envisioning life on campus.

But with independence comes skills and responsibilities you’ll be encountering for the first time, and unlike at home and in school your schedule won’t be set by your parents, teachers, and coaches. This can be a shock, not least because you’ll go from 40 hours a week in the classroom to fewer than 20. Experts say the shock is normal, though, and establishing a routine will make the adjustment easier. It may take some time, but as University of Cincinnati first-year student Emily Gehrke points out, “Consistency is key—when challenges arise, your established routines will provide a stable foundation to fall back on.”

Teens who sleep in on weekends may be giving their mental health a boost. A new study found that young people who made up for lost weekday sleep had a significantly lower risk of depression. While consistent sleep is still best, weekend catch-up sleep appears to offer meaningful protection. The findings highlight how powerful sleep can be for adolescent well-being.

Scientists have found that combining silybin with carvedilol works far better against liver fibrosis than either drug alone. The duo targets the root drivers of liver scarring, sharply reducing collagen buildup and liver damage in experimental models. Importantly, both drugs are already approved and commonly prescribed. That makes this discovery especially promising for rapid clinical translation.

GLP-1 drugs like Zepbound and Wegovy work wonders for people who want to lose wieght, as well as for helping to reduce national obesity rates overall. But recent research has shown that quitting the drugs might not be a smooth process.

Results from a clinical trial published last month in JAMA Internal Medicine revealed that the majority of participants who were assigned to stop taking Zepbound regained most of the weight they’d lost while using the drug. The cardiovascular and metabolic improvements they experienced, such as lower blood pressure and cholesterol levels, diminished as well. As a result, two medical specialists from the University of Pittsburgh recommend that the branding of GLP-1 drugs be changed from “weight loss” to “weight management,” and that the people they are prescribed to should be advised that they may need to take them indefinitely to see continued results.

Researchers compared a traditional Chinese medicine, Yueju Pill, with a standard antidepressant and found both reduced depression symptoms. However, only Yueju Pill increased a brain-supporting protein associated with mood improvement. Brain imaging showed that unique network patterns—especially in visual regions—could predict who benefited most from Yueju Pill. This opens the door to more personalized depression treatments guided by brain scans.

A groundbreaking study shows that breast cancer screening works better when it’s personalized. Instead of annual mammograms for all, women were screened based on genetics, health history, and lifestyle factors. This approach reduced advanced cancers without increasing risk for those screened less often. Most women preferred the personalized model, hinting at a major shift in future screening guidelines.

As spinal cord injuries increasingly affect older adults, new research reveals a surprising pattern in recovery. The study shows that aging does not appear to slow the healing of nerves themselves, with older patients regaining strength and sensation at rates similar to younger people. However, age makes a clear difference in how well people recover everyday abilities like walking, mobility, and self-care.

A one-dose oral drug called zoliflodacin has proven highly effective against gonorrhoea in a major international trial. The pill matched the success of current treatments while avoiding injections and complex dosing. As antibiotic resistance spreads, this new option could make treatment simpler and more accessible worldwide. Approval could mark a major step forward in controlling a stubborn global STI.

If you have a dog you probably already know the beneficial effects their playfulness, companionship, and devotion can have on your mood and emotions. Science backs this up, too. According to recent research, teens who live with dogs have notably lower occurrences of social withdrawal, disordered thinking, and aggressive behavior than those who don’t keep dogs.

Now, scientists have discovered another potential reason the family pooch makes you feel happier and more grounded: The microbes you share with them. Researchers in Japan have discovered that dog-owning teenagers had more types of certain bacteria in their saliva than was found in the saliva of non-dog owners. When transplanted into mice, the bacteria changed some of the rodents’ social behavior, including increasing instances of what’s known as “preconcern” or “empathetic concern,” a type of sympathetic response in animals and humans. How this microbe exchange works and specifically influences mood are still being investigated, and no amount of gut microbiome changes will convince people who don’t care for dogs to feel otherwise. But as one of the scientists observed, “Even without owning a dog, maintaining a diverse microbiome can potentially improve mental health scores.”

Stanford scientists have uncovered how mRNA COVID-19 vaccines can very rarely trigger heart inflammation in young men — and how that risk might be reduced. They found that the vaccines can spark a two-step immune reaction that floods the body with inflammatory signals, drawing aggressive immune cells into the heart and causing temporary injury.

A four–amino acid peptide called CAQK has shown powerful brain-protective effects in animal models of traumatic brain injury. Delivered through a standard IV, it zeroes in on injured brain tissue, calming inflammation and reducing cell death while improving recovery. The peptide worked in both mice and pigs, whose brains are closer to humans in structure. Researchers are now preparing to move toward early human clinical trials.