Harvard Health Blog

Biting bugs are a nuisance and sometimes can spread  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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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 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.

One reason people eat yogurt is because it contains probiotics — beneficial bacteria and yeasts that improve digestion, provide protection from dangerous organisms, and boost the immune system. But not everyone likes the taste or texture of yogurt, so here are some other foods that offer the same benefits.

The US healthcare system is expensive, complicated, dysfunctional — and broken. The system needs a major overhaul, and the arguments for this fall into a few broad categories: high costs, uneven access, and undue emphasis on areas of spending that do not directly benefit patients

It's extremely rare for a child or teen to die suddenly because of a heart problem, but several conditions can increase the risk of sudden death. A policy statement from the American Academy of Pediatrics outlines four questions about personal and family health history that can help identify children who may be at risk.