Vaccines and immunizations Archive

A 2022 observational study that included more than 200,000 people found that those who'd had shingles at some point had a 30% higher long-term risk for a major cardiovascular event, compared with people who didn't have shingles.

Parents often think that they would know if their teen was suicidal. However, this is not always the case. Here's what to be aware of and watch for, and what to do if you see worrisome behavior.

Weight can be a sensitive topic with children and teens, and sometimes a child needs to gain some weight. Checking with your doctor before working on adding weight and emphasizing healthy, high-calorie foods are important.

Cervical cancer is curable when caught early through routine screening, so research showing a surprising rise in advanced cancer cases in some groups is worrisome. Two Harvard experts share insights about the research and advice on how people can best protect themselves.

More than a million nerve connections are made in the brain in the first few years of life. Babies and young children thrive with responsive caregiving, such as engaging a child in playful games that change as they grow.

Rates of obesity in children have more than tripled in the past six decades, and are still climbing. With millions of children and teens at risk for the many complications of obesity, the American Academy of Pediatrics has updated its guidelines for pediatricians.

A fever is the immune system's response to an infection or invader. Most fevers drop after people take over-the-counter medications. People should call a doctor if their fever reaches 103° F and go to an emergency room if it reaches 105°.

Nearsightedness is a growing problem worldwide. While genes and developmental factors play a role in whether a child becomes nearsighted, research suggests that spending time outdoors can lower a child's risk of developing this condition.

The routine yearly medical check-up is now more often referred to as the annual wellness visit, which allows people to formulate detailed health goals with their doctor and design plans to meet them, as well as assess the possibility of life-changing events, like heart attack, stroke, and cancer.

Wintertime can pose challenges to cardiovascular health. Cold temperatures can cause arteries to narrow, which can leave people with heart disease vulnerable to angina or heart attacks, especially during physical exertion. Changes in sleep, eating, and exercise habits related to the season may also affect the heart. Crowded indoor gatherings also raise a person's risk for respiratory infections, which can exacerbate heart disease.