Harvard Health Blog

When a person's heart stops beating and they go into cardiac arrest, receiving CPR can double their odds of surviving. And since the majority of cardiac arrests happen at home, knowing the basics of CPR may save the life of a loved one.

Even though motorcycles are riskier than other modes of transportation, the number of motorcycles registered in the US has doubled in the past 20 years. A study examined whether large gatherings of bikers would lead to more fatal accidents and an increase in rates of organ donation.

A recent study suggests that following a low-carb diet may quickly reduce A1C levels in people with prediabetes. Such a rigorous approach to eating may not be realistic, but cutting even some carbs may lead to weight loss and lower blood sugar.

This year, results from a review of literature on plant-based diets and prostate cancer risk concluded that apart from having advantages for cardiovascular health, quality of life, and environmental benefits, plant-based diets have the potential to improve prostate cancer outcomes.

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 holidays are supposed to be filled with love, laughter, and good cheer. Unfortunately, joyous celebration often deteriorates into discord when family and friends gather during the season. But you don't have to get drawn into arguments if you plan ahead and stay alert for potential triggers.

Aspirin has many proven benefits and some research has linked its use to a lower risk for fractures after falls. Now, a more rigorous study finds a daily dose offers no added protection from serious falls and fractures compared with placebo.

Bedtime procrastination often interferes with getting sufficient quality sleep, which is a pillar of good health. If you are guilty of staying up too late, there are things you can do to try to change your behavior.

Treating pain is the most common reason offered by the millions of Americans who use products that contain cannabinoids. However, there's good evidence that a placebo provides very similar pain relief. But why?

The holiday season is full of parties, gatherings, food, and drink — making it an ideal time to adopt healthier eating habits. Doing so can help you manage stress and avoid overeating, and will set you up for success in the new year.

Sibling rivalry is a remarkably normal feature of family life, but too much squabbling and competition can be hurtful, and can have lasting effects on children. What can parents do to manage this when it happens in their family?

Hormonal therapy is a cornerstone of prostate cancer treatment, but it has burdensome side effects. Doctors and patients alike are highly motivated to use this therapy only for as long as necessary. But how long is long enough? A recent study provides needed clarity.

Genes that helped people survive during the time of the Black Death are more likely to be found in people with autoimmune diseases alive today. Does this tell scientists anything about what surviving the COVID-19 pandemic might mean for the world's population?

Weight-loss surgery has many proven benefits. Now, data from a study of people who had bariatric surgery and were followed for several years suggests that it also improves pain and physical function.

A study found that people with mild cognitive impairment who did crossword puzzles regularly showed modest improvement in cognition and less brain shrinkage. Will doing crossword puzzles be helpful to people whose thinking and memory are normal?

Social media and apps about babies and children can fuel worries about a child's development. It's important to remember that every child is different and may move through stages of development at varying paces.

When you brush your teeth, how much thought do you give to what you're doing? Regular brushing keeps plaque from forming on your teeth and gums healthy, but you do need a good toothbrush and proper brushing technique.

Another holiday season is here, and this year we need to contend with other viruses besides COVID-19. Three Harvard experts share their thoughts on the best ways to keep ourselves and our family members healthy as we celebrate holidays together.

Many parents face the challenge of getting their child to move from sleeping in bed with them to sleeping in their own bed. Changing this habit takes time; being practical and consistent about it helps.

The CDC's 2016 guidelines for prescribing opioid medications aimed to reduce deaths from overdose. Recent revisions to these guidelines aim for refinement while emphasizing safety and the importance of finding the best treatment solution for each person.

New regulations allow Americans to buy hearing aids over the counter, without requiring a hearing test. These devices will cost less and can only treat mild to moderate hearing loss––will they be right for you?

The prescription drug Adderall has been in short supply for months. How widespread is this problem, and what are the consequences, and possible solutions, for adults who rely on this medication to manage ADHD?

An ad campaign sponsored by the milk industry claims that milk is better than water for hydration. A few studies appear to support the claim, but they involved a small number of subjects and have important limitations.

Flooding due to major storms or heavy rains can harm lung health, both from toxic contaminants that end up in the air and from the growth of mold caused by dampness. Taking steps to prevent flooding when possible and moving quickly to reduce health risks if flooding occurs can help protect your family's health.