Recent Blog Articles
How — and why — to fit more fiber and fermented food into your meals
Tick season is expanding: Protect yourself against Lyme disease
What? Another medical form to fill out?
How do trees and green spaces enhance our health?
A muscle-building obsession in boys: What to know and do
Harvard Health Ad Watch: New drug, old song, clever tagline
Concussion in children: What to know and do
What color is your tongue? What's healthy, what's not?
Your amazing parathyroid glands
When — and how — should you be screened for colon cancer?
Infectious diseases Archive
Articles
Babesiosis: A tick-borne illness on the rise
While Lyme disease is the most commonly reported tick-borne illness in the United States, a report from the CDC shows that ticks that cause babesiosis are appearing in more parts of the Northeast and Midwest.
Is biting my nails really that bad?
Nail-biting can introduce germs into people's mouths that can cause a range of illnesses, including colds or salmonella. The habit also creates tiny fissures in skin that can become infected. People who bite their nails should occupy their mouth and hands with other tasks.
Why do we need new flu shots every year?
With influenza virus, a new vaccine must be developed each year to adapt to the virus's changing structure.
Does COVID-19 damage the brain?
COVID-19 can damage the brain in many ways. Initially, it can cause brain inflammation that causes confusion, difficulty concentrating, and memory problems. COVID also can cause new psychological disorders such as depression or anxiety. It can even cause people to see and hear things that aren't there and to believe things that aren't true. COVID often damages the brain's autonomic nervous system, leading to abnormalities in heart rate and blood pressure. Additionally, the virus that causes COVID can infect and injure the lining of blood vessels and make blood clot more easily, which can lead to strokes and heart attacks.
Shingles linked with higher risk for heart disease and stroke
People who have had shingles have a 30% increased risk for heart disease and stroke, says a new Harvard study. Learn more about the risk.
Vaccination may protect against long COVID
Getting at least one dose of a COVID vaccine lowers the risk of developing long COVID even among people who were previously unvaccinated and recovered from COVID.
Harvard study: Shingles linked to a spike in risks for heart attack and stroke
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.
How high a fever is too high?
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°.
Cold-weather cautions
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.
Want to stay healthy over the holidays?
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.
Recent Blog Articles
How — and why — to fit more fiber and fermented food into your meals
Tick season is expanding: Protect yourself against Lyme disease
What? Another medical form to fill out?
How do trees and green spaces enhance our health?
A muscle-building obsession in boys: What to know and do
Harvard Health Ad Watch: New drug, old song, clever tagline
Concussion in children: What to know and do
What color is your tongue? What's healthy, what's not?
Your amazing parathyroid glands
When — and how — should you be screened for colon cancer?
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