(Stephanie Hogan/ CBC News) — Back in the 1980s, there was a public service announcement on TV that you may remember — or may have seen on YouTube.

A guy in a kitchen held up an egg and said, “This is your brain.” Then he cracked the egg into a hot frying pan, and said, “This is your brain on drugs.”

One   …

(Lisa Rapaport/ Everyday Health) — New research shows that many middle-aged women may be living with undiagnosed hypertension because symptoms of the condition — including chest pain, exhaustion, headaches, heart palpitations, and sleep disturbances — are mistakenly attributed to menopause.

Missed hypertension cases  …

(Linda Carroll/ NBC News) — There’s growing evidence that the HPV vaccine can protect even young women and girls who haven’t been immunized.

A new government study finds human papillomavirus infections have declined dramatically in both vaccinated and unvaccinated teen girls and young women.

Data  …

(Bethany Ao/ The Detroit News) — While scrolling through TikTok during the early months of the pandemic, Haley Collins often encountered videos showing people’s exercise routines or the foods they ate throughout the day. Collins, a 19-year-old sophomore at Catholic University in Washington, D.C., has struggled with  …

(Cypress Hansen/ Knowable Magazine) — In 2011, Germany’s Frankfurt Airport — the country’s busiest — unveiled its fourth runway. The addition sparked major protests, with demonstrators returning to the airport every Monday for years. “It’s destroying my life,” one protester told Reuters a year later. “Every time I   …

(Christie Aschwaden/ Nature) — As COVID-19 vaccination rates pick up around the world, people have reasonably begun to ask: how much longer will this pandemic last? It’s an issue surrounded with uncertainties. But the once-popular idea that enough people will eventually gain immunity to SARS-CoV-2 to block most transmission  …

(Esther Landhuis/ Knowable Magazine) — For nearly 30 years, the hunt for a cure for Alzheimer’s disease has focused on a protein called beta-amyloid. Amyloid, the hypothesis goes, builds up inside the brain to bring about this memory-robbing disorder, which afflicts some 47 million people worldwide.

Billions of dollars  …

(Amber Dance/ Knowable Magazine) — Some people get very sick with Covid-19; some die. Some have symptoms that last for months.

Yet others have only mild illness, or don’t even notice they’re infected. Last spring, as the pandemic got going, many immunologists began hunting, in patients’ blood samples, for the reason behind  …

(Byram W. Bridle/ The Conversation) — “Eat dirt!” is a phrase I remember well. It was in the title of an article published by Harvard University environmental health professor, Dr. Scott T. Weiss, and it captured my attention while I was learning about an immunological concept known as the “hygiene hypothesis.”

The core  …

(Donald Weaver/ The Conversation) — As a researcher who studies Alzheimer’s disease and a neurologist who cares for people with Alzheimer’s, I share in the frustration, indeed anger, of people and families when I tell them that I have no cure to offer.

Over the past year, scientists have tackled COVID-19, a previously unknown  …