Vision and hearing Archive

Now that a booster shot is recommended for some people who had COVID-19 vaccines, many of us have questions about the right timing, dose, and type of vaccine to seek.

If you are gathering with family or friends during this holiday season there is still a lot of uncertainty around how to help keep everyone as safe as possible from COVID-19 illnesses and hospitalizations, particularly when many people will be traveling. Harvard Health Publishing faculty contributors share their own holiday plans and offer advice for safely enjoying the holidays this year.

As winter approaches, it's time to contend with rising rates of cold and flu. An analysis of studies suggests that over-the-counter zinc supplements may be one way to make cold and flu season a bit easier. But how strong is the evidence and what else could help?

Research has found that people who eat nuts regularly are less likely to have heart disease. While all varieties of nuts are full of important nutrients, a two-year randomized trial shows a daily dose of walnuts lowered levels of harmful blood lipids that affect cardiovascular health -- and without adding extra pounds.

In science, true breakthroughs are rare. Some are the result of fortunate accidents, while others come from scientists with the will to pursue a dream despite challenges and obstacles. And when such breakthroughs do happen –– think of penicillin or COVID vaccines –– the whole world benefits from them.

Eye-catching media headlines are intended to snag our attention and can influence whether we decide to read, click on, or tune into a story. When it comes health and medicine, though, it's best to be careful: headlines may be written in a way that is misleading, confusing, or deceptive, so understanding the thinking behind them and focusing on the facts is important.