Harvard Health Blog

Most children have an occasional headache, but some children get recurrent headaches. These often run in families and may be migraine or tension headaches or might stem from other causes.

Can a blood test tell whether or not you have a concussion? It’s not quite that simple. There is a test that indicates the presence of substances released into the blood after a brain injury, but for now it is more useful for identifying situations when a CT scan is not necessary.

Plenty of research associates optimism with a reduced risk of certain diseases and conditions. Now, a study suggests that optimistic people are also more likely to live longer.

Rising resistance to antibiotics driven by overpresciption and overuse has led to a decline in the effectiveness of antibiotics in treating urinary tract infections. If your doctor wants to prescribe an antibiotic, be sure to ask if it’s necessary, and what alternatives there might be.

Wondering how a teen or young adult can smoothly smoothly transition from seeing a pediatrician to a medical practice that treats adults? Making plans and taking these steps will help.

For people who have had a heart attack or heart surgery, or been diagnosed with angina or a specific kind of heart failure, participating in a cardiac rehabilitation program has medically proven benefits to overall health and quality of life.

Using a CPAP machine is beneficial for people with obstructive sleep apnea, but if the machine isn’t kept clean it could lead to an illness. There are sanitizing systems available, but cleaning the parts by hand is just as effective.

Could just 10 foods substantially impact your risk of dying from a cardiometabolic disease (CMD) like type 2 diabetes, heart disease, or stroke? Maybe. A study published in JAMA provides some insight into the degree to which 10 specific foods and nutrients affect the risk of dying from CMD.

PrEP (pre-exposure prophylaxis) is a daily medication taken to prevent HIV infection. While multiple studies show PrEP is effective, relatively few of those who might benefit are taking it. Will a 10-year initiative to reduce rates of HIV and a new formulation of PrEP help?

Statins are known to be effective in reducing risk of cardiovascular disease, but for older adults the guidelines are less clear. A study looking at an older population found that continuing to take statins did have a statistically significant benefit.

Mammograms look for signs of breast cancer. They can also provide information on whether a woman has high breast density, which slightly increases risk for developing breast cancer. Here’s what you need to know and do if you’re notified about this risk factor.

Wondering whether a blood test or brain scan can accurately diagnose Alzheimer’s disease? If memory loss is a problem for you or a loved one, consider these points before discussing potential next steps with a doctor.

Approximately 1% of the population has vitiligo, a skin condition in which areas of skin lose their color. While topical treatments and light therapy help some, research with a class of medications not previously used for this condition has shown promising results.

Readily available DNA testing unexpectedly changed some family trees. But people who grew up knowing –– or recently learned –– they were donor-conceived may have differing reasons for wanting to better understand their personal stories.

Trying to make up for not getting enough sleep during the week by sleeping longer on weekends has been found to have negative effects such as weight gain, expending less energy, and increased calorie intake during evenings.

A recent 15-year follow-up to the Veterans Affairs Diabetes Trial found that short-term intensive blood sugar control did not lead to significant reduction of risk of cardiovascular events in the long term.

Treatments for advanced prostate cancer that suppress testosterone, a hormone (also called an androgen) that drives the malignant cells to grow and spread, are collectively referred to as androgen deprivation therapies, or ADT. These therapies can significantly extend lifespans in men who have the disease, but they also have a range of challenging side effects. […]

Direct-to-consumer (DTC) drug ads promoting treatments for arthritis, cancer, heartburn, psoriasis, flagging memory, and more are all everywhere you look. All too often, the information shared is incomplete, biased, or confusing––here's what to watch out for and how to get the whole story when considering treatment options.