Harvard Health Blog

It's a common misconception that sexual orientation develops at an early age and remains stable throughout a person's life. Yet differing forms of sexual fluidity are a common thread in many lives and understanding changes in attraction, identity, and behavior underpinning this can help dispel misconceptions and reduce stigma.

The time pressures of primary care doctors make it unlikely that they will be able to give their patients tests of cognitive function. So how will the growing numbers of people at risk for Alzheimer's or another type of dementia be identified? A self-administered test is now available.

Our understanding of how chronic inflammation can impair health has expanded dramatically in recent years, causing some people to wonder if there is a test to identify it, and if they should have it. There are several tests that can detect inflammation, and they are useful in certain situations, but not universally.

It's possible to overeat and not even realize it until you've finished a meal and doing so does not mean you have an eating problem or disorder. Mindfulness exercises can help you slow down and enjoy eating, making it easier to avoid overeating.

Today, most surgeries to remove the prostate gland in men with prostate cancer are performed with robotic assistance, which ostensibly offers quality-of-life advantages. But how does this method compare with traditional open surgery? A recent study provides some clarity.

Claims that vitamin D supplements are beneficial to health are common, but many of these supposed benefits remain unproven. A recent study looked at data from over 25,000 people in an attempt to determine if taking vitamin D regularly might help prevent autoimmune disease.

Pea, potato, and pistachio milk? Supermarkets now sell multiple kinds of plant-based milks made from nuts, beans, grains, vegetables, or fruit. Before trying these, some people might like to know more about nutritional benefits and any other reasons to choose or avoid them.

For many people, a visit to the doctor causes anxiety, and discussing sensitive subjects like sexual problems, substance use, or mental health issues is even more likely to induce discomfort. But these discussions can be less anxiety-inducing and more productive if people know what to expect.

Choosing to become pregnant and parent without a partner is increasingly common and more widely accepted than in the past, but deciding to pursue this path can be lonely. Additionally, there are important questions about financial security and the support of family and friends that a prospective single parent needs to consider.

Brain fog, meaning slow or sluggish thinking, can occur under many different circumstances. In many cases, it is temporary and gets better on its own. Many people who have recovered from COVID-19 report some degree of brain fog and a study suggests even those with milder cases may experience problems with memory and attention.

Inflammation is the body's response to an injury, allergy, or infection, a reaction that attempts to restore the health of the affected area. But that's only part of the story, because there are two types of inflammation, and it's important to know the difference—and what is and isn't true about all types.

The CDC estimates that 70 million Americans suffer from chronic sleep problems. For some, melatonin is believed to be a safe treatment option because it is a hormone produced by our bodies. But evidence of its effectiveness is lacking, and inconsistent quality of product is a concern.

Some people feel very strongly that their gender is not the one they were assigned at birth. When families, health care providers, and others ignore or deny this, or try to stop the person from living as the gender they feel is right for them, it's not only unkind but dangerous.

It's difficult to get motivated to be active outside during cold-weather months, but it's important to your health and can help you meet any fitness goals you're trying to reach. There are ways to get outside and moving in cold temperatures.

Growing evidence suggests that poor sleep is linked to a host of health problems, including a higher risk of high blood pressure, diabetes, obesity, and heart disease. Now, a recent study on people in midlife finds that having a combination of sleep problems may nearly triple a person's risk of heart disease.

Alarming rates of anxiety and depression are affecting children and teens across the US. While calls are made to expand much-needed programs and access to services, there are actions parents can take today to support their children's mental health.

Medicines known as blood thinners are prescribed as long-term treatment to avoid initial or recurring blood clots that could cause serious complications. What does an ad in heavy rotation about the brand name blood thinner Eliquis get right and what else do you need to consider?

A study of Black adults living in the Atlanta area suggests that feeling rooted in community and socializing with neighbors may strongly contribute to better cardiovascular health, which might lower risk for heart attacks and strokes.

New parents might want to wait awhile before considering having another child, and breastfeeding prevents ovulation, so some people use it as a natural birth control method during the early months of an infant's life. However, it's effective only if a mother is breastfeeding frequently and an infant is receiving only breast milk as food.

The benefits of olive oil to help reduce the risk of heart disease are well-known, but a recent study showed that people who consumed the highest amount of olive oil daily had a lower overall risk of dying early, as well as lower risk of dying from heart disease, cancer, and other diseases.

When you take an aging parent to a medical appointment, you wind up playing many roles. Millions of people in the US are caring for family members and are learning as they go along, so they can benefit from tips to keep them on track before, during, and after the appointment.

The past two years have been hard and children and teens have had to deal with particularly challenging circumstances. Resilience—the ability to overcome hardship and stress—is one of the most important skills parents can teach their children.

Having surgery to remove cataracts restores blurred or distorted vision, helping to improve quality of life for older adults. Now, a new study makes a strong case that removing cataracts may reduce a person's risk of developing dementia.

Constipation can describe many types of problems with moving your bowels. It becomes chronic when it lasts for weeks or months. Many people are interested in natural remedies for constipation, and one of the most common is adding fiber to your diet. A new study compared three natural sources of fiber, with encouraging results.