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Harvard Health Blog

Read the latest posts from experts at Harvard Health Publishing covering a variety of health topics and perspectives on medical news.


Tempted to have genetic testing? First ask why

Published August 17, 2021

Several companies promote at-home genetic testing to uncover a range of potential health problems (and, in some cases, ancestry traits). Just how useful is this and how do such tests differ from genetic testing a doctor may recommend for medical reasons?

Looking out for diverticulitis

Published August 16, 2021

More than half of US adults over 60 have diverticulosis, a condition where part of the wall of the colon bulges outward and forms tiny pouches. Diverticulosis does not cause symptoms, but if a pouch becomes inflamed or infected it becomes diverticulitis, which can be mild or more serious.

Air pollution: How to reduce harm to your health

Published August 13, 2021

Some air pollution levels have inched up in recent years, and accumulating evidence suggests that higher levels of particulates in the air are linked with increased levels of hospitalization for many serious health problems. But we can make choices to help both the environment and our health.

Aortic stenosis: Do health disparities affect treatment?

Published August 12, 2021

Aortic stenosis is the narrowing of the aortic valve in the heart, which can lead to heart failure if the problem is not identified and treated. Unfortunately, research shows that inequities exist in access to proper diagnosis and care for this condition. Understanding how stenosis is identified and treated can help you receive good care.

The endocannabinoid system: Essential and mysterious

Published August 11, 2021

Though recently discovered, the endocannabinoid system regulates and controls many of our critical bodily functions. Researchers are investigating the ECS's role in learning and memory and in hunger, hoping that these avenues of research may lead to new drug discoveries.

Bugs are biting: Safety precautions for children

Published August 10, 2021

Most of the time, biting bugs are just a nuisance that goes with being outdoors in warm weather. But sometimes insect bites can lead to illnesses like Lyme disease, Zika, or West Nile virus. To prevent bug bites, take simple precautions and learn how to choose and safely use insect repellents on children and yourself.

Time to hire a caregiver? 3 tips to help

Published August 9, 2021
If you are facing physical or cognitive challenges, hiring caregivers to come into your home can be an effective way to continue living independently. It's not always easy having new people coming into your home, but there are things you can do to adjust to the changes.

Extreme heat: Staying safe if you have health issues

Published August 6, 2021

Climate change has made life-threatening heat waves increasingly common across the globe. Anyone with health issues will have a more difficult time in extreme heat, including older people and people with diabetes, heart disease, asthma, and other conditions. Be prepared by knowing how to identify and treat heat-related illness, and how to plan for hot days.

Tick season is expanding: Protect yourself against Lyme disease

Updated April 14, 2023

With ticks thriving in a wider geographic range, appearing earlier and sticking around later, it's important to stay vigilant about protecting yourself against ticks that cause Lyme disease and other illnesses. Learn some steps you can take to avoid tick bites.

Heart disease risk: Partnering on lifestyle change can help

Published August 4, 2021

For people who have risk factors for heart disease, it's important to make lifestyle changes like losing weight, getting more exercise, and eating a healthier diet. Longstanding habits are hard to change, but managing the challenge of healthy eating is easier if people have a partner who is supportive and involved in making food choices.

Can wearing contacts harm your vision?

Published August 3, 2021

Millions of people wear contact lenses, and with proper use and care they are very safe. However, sleeping with lenses in that are not specifically intended for extended wear can increase the risk of infection in the eye's cornea.

Vegan and paleo: Pluses and minuses to watch

Published August 2, 2021

Strict vegan and paleo eating patterns seem to be at opposite ends of the diet spectrum. Both can offer health benefits, though it's wise to understand the nutritional gaps left by each approach due to excluded food groups and consider five principles that will make any eating plan you choose nutritionally sound.

Postpartum anxiety is invisible, but common and treatable

Published July 30, 2021

It's not unusual for women to feel down or depressed after giving birth, but if the feelings persist or become debilitating, it's cause for concern. Many of the symptoms overlap between postpartum depression and postpartum anxiety, but some women do not respond as well to some treatments for depression, so it's important to establish the correct diagnosis.

Right-sizing opioid prescriptions after surgery

Published July 29, 2021

It's common for doctors to prescribe opioid pain medications for their patients after surgery; however, prescribing large numbers of pills increases the possibility of dependence and overdose. Writing prescriptions for smaller quantities of pills while still monitoring people's pain is one way to reduce the likelihood that a person develops a problem.

Ready for your routine medical checkup?

Published July 28, 2021

Before the pandemic did you schedule a routine, in-person health checkup every year? Is this necessary or can you safely skip a year or consider a telehealth visit or a combination of in-person and virtual care? There are pros and cons to these options and no single solution will work for everyone.

Nicotine addiction explained — and how medications can help

Published July 27, 2021

Addiction is now understood to be a neurological disorder that results from changes to the brain's reward center caused by addictive substances. Ideally, treatment for nicotine addiction combines medication to suppress cravings with counseling to help patients reprogram their behavior.

Is your vision impaired? Tips to cope

Published July 26, 2021

Living with low or impaired vision comes with many challenges. Accessibility features on computer hardware and software, special devices, and adaptations to your home can help make daily life easier when living with a vision impairment.

Misgendering: What it is and why it matters

Published July 23, 2021

For people who are transgender or nonbinary, being misgendered may be a daily occurrence. When this happens, people feel invalidated and unseen, and the burden can negatively affect their mental health. Making the effort to use the right names, pronouns, and honorifics when addressing a person shows respect and support for those around you and how they identify themselves.

Healthy brain, healthier heart?

Published July 22, 2021

Researchers have increasingly found links between poor mental health and higher heart disease risk. Stress, childhood trauma, and other issues may affect behavior and trigger physical changes that elevate heart risk. Taking steps to support mental health can potentially improve heart health as well.

Stories connect us

Published July 21, 2021
Research has shown that social isolation is bad for our health. Sharing our personal stories helps connect us, and it is an important aspect of maintaining mental health and managing chronic conditions.

Wondering about a headline-grabbing drug? Read on

Published July 20, 2021

News stories frequently tout "breakthrough" drugs, but how often does this turn out to be true? When you read or hear about the results of a study for a new medication, these steps can help you ask questions to get the full story and a better sense of what it might mean for your health.

Respiratory virus cases tick upward: What parents should know

Updated October 23, 2022

Respiratory syncytial virus, or RSV, is the leading cause of bronchiolitis and pneumonia in children under a year old. Usually, cases drop in spring and summer, but the pattern is changing and parents should be watchful.

Hope: Why it matters

Published July 16, 2021
As humans, we live our lives in a chaotic world, knowing that bad things happen to people every day, yet we are expected to continue moving forward. How do we do this? By finding ways to confront life's dangers with hope, an essential component of our well-being.

Will new guidelines for heart failure affect you?

Published July 15, 2021
Heart failure can limit a person's ability to accomplish daily tasks, affect quality of life, and even shorten lives. Updated guidelines for one form of heart failure are available to help clinicians and people living with this condition navigate complex therapy options.

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