The causes of obesity are complex and influenced by many factors. While research has highlighted connections between sleep, eating patterns and weight gain, scientists remain uncertain of the role of the circadian system -- the biological clock -- in shaping eating patterns. But a new study reveals a distinct relationship between circadian rhythms, weight and eating habits in adolescents, a vulnerable age group whose eating patterns influence their lifelong health. The study found that adolescents whose weight was classified as 'overweight' or 'obese' consumed more calories later in the day compared to participants with healthy weights.

The U.S. is experiencing its worst flu season in over 15 years, with nearly 8 percent of doctor visits linked to respiratory illnesses and around 50,000 people hospitalized. Flu cases are especially high in 45 states, hitting the South, West, and Southwest the hardest. The latest Canadian respiratory virus surveillance report suggests flu is on the rise in Canada, too. Health experts emphasize the importance of getting a flu shot, even if the flu season is already underway, since it can still help lower your risk of serious illness. They also recommend practicing good hygiene, like washing your hands often, to avoid getting sick.

If you do catch the flu, staying hydrated and getting plenty of rest will help your body recover. Over-the-counter medicines, such as pain relievers, cough suppressants, and cold medicine, can ease symptoms. Doctors also advise staying home while you’re sick to avoid spreading the virus to others.

The recent plane crash near Washington, D.C., has deeply saddened young people across the country. Among the victims were several young figure skaters, along with their parents and coaches, who were returning from a competition. Their sudden passing was met with an outpouring of sadness, as friends, teammates, and supporters expressed their grief and disbelief.

Losing a friend can be overwhelming, especially when it happens unexpectedly. Grief affects everyone differently—some people might feel numb, while others may experience deep sadness, guilt, or even anger. Experts say that talking about your feelings of grief and loss can help. You can reach out to friends, family, or a school counselor for support. There are also free, anonymous, and confidential helplines available to help you through difficult times. You can find more ways to get help on our Hotlines page.

Heart disease continues to be the leading cause of death in the United States, taking more lives than cancer and accidents combined. According to the American Heart Association’s 2025 Heart Disease and Stroke Statistics Update, key risk factors such as high blood pressure and obesity are increasing at alarming rates. Even though medical advances are helping people live longer with heart conditions, the rising number of these risk factors highlights the urgent need for better ways to prevent and manage heart disease. You can take action now to keep your heart healthy by eating nutritious foods, staying active, and avoiding smoking or vaping, which can help lower your risk of heart disease in the future.

The U.S. Food and Drug Administration (FDA) has banned Red Dye No. 3 in foods, dietary supplements, and medicines like cough syrup. This decision comes about 35 years after the dye was banned in cosmetics because studies showed it caused cancer in lab rats. While there’s no clear proof that Red Dye No. 3 causes cancer in humans, many consumer advocates are happy about the ban. Food companies have until January 2027, and makers of ingestible medicines have until January 2028, to stop using it.