CNN Health

Many beers come in brown glass bottles and sometimes green. But why? The answer has something to do with "skunking" -- when beer produces a similar chemical compound to that of skunks. Here's how to avoid that funky taste in your beer.

The Omicron subvariant caused as many as 3 in 4 cases of Covid-19 in the United States last week, according to the latest genomic surveillance from the US Centers for Disease Control and Prevention; so far, there are no signs of a looming surge in the US.

Covid-19 has become a chronic condition for tens of millions of people -- and an expensive one, as well. Long Covid -- a condition marked by lingering symptoms that can involve multiple bodily systems -- has cost a cumulative $386 billion in lost wages, savings and medical expenses in the US alone as of January, according to one estimate.

From the early days of the pandemic, doctors noticed that in severe cases of Covid-19 -- the ones that landed people in the hospital on ventilators with shredded lungs -- most of the internal wreckage wasn't being directly inflicted by the virus itself but by a blizzard of immune reactions triggered by the body to fight the infection.

A new study found that women in the US face the highest rates of preventable and maternal mortality when compared with women in 10 other wealthy nations.

A fourth dose of the Pfizer/BioNTech Covid-19 vaccine seems to offer short-lived protection against infection overall, but protection against severe illness did not wane for at least several weeks, according to a new study.

A unprecedented global study of Alzheimer's disease has uncovered an additional 42 genes that may affect a person's risk of developing the disorder. Doctors hope to use that information to develop a more precise way to identify risk.

Advisers to the US Food and Drug Administration are scheduled to meet Wednesday to get a clearer picture of what the future of Covid-19 booster shots might look like.

In recent years, public figures openly sharing their mental health struggles have helped lift fellow sufferers out of silent shame and stigma.

In a new study, researchers predict that lifting masking and social-distancing restrictions in March 2022 could lead to resurgences of Covid-19 deaths in most states based off projections from a simulation model. The study also found that delaying restrictions would not prevent inevitable surges in deaths for those states, concluding that there is no "magic moment" to lift restrictions.

US Centers for Disease Control and Prevention Director Dr. Rochelle Walensky announced a sweeping review of the nation's lead public health agency Monday.

Two new pieces of research highlight the broader effects of gun violence on health and examine how early intervention on gun safety could be effective in certain groups.

The second attempt at the final, crucial prelaunch test for NASA's Artemis I mission to the moon was scrubbed on Monday.

Pregnant women exposed to cannabis products that contained THC and CBD were more likely to have children with higher weight and blood sugar, a new study found.

Interest in using wastewater surveillance to monitor Covid-19 continues to grow in the United States, as the values of the early detection tool come into clearer focus.

For some people, coffee jump-starts their bowel movements in addition to their energy.

Roller-skating and rollerblading aren't just for kids; if you're looking for a new spring or summer workout, CNN fitness and wellness expert Stephanie Mansour shares tips to get started and stay safe.

We all have a bad night's sleep now and again, but some people regularly rely on sleep aids, both over-the-counter and prescription. Is that a bad idea? We asked an expert.

The American College of Cardiology, the American Heart Association and the Heart Failure Society of America released new guidelines Friday that add a fourth class of medication to the recommended treatment plan for people who have a condition called heart failure with reduced ejection fraction.

Stopping the next major coronavirus variant involves knowing where it might come from.