An essay about the weeks after the author’s brother nearly died.

First came seizures. Then he began forgetting words. By age four he could barely walk. The story of the race to save a child from a genetic death sentence.

Inside the empire of Botox.

Not long ago the idea of repairing the brain’s wiring to fight addiction would have seemed far-fetched. But advances in neuroscience have upended conventional notions about addiction—what it is, what can trigger it, and why quitting is so tough.

On the fallibility of memory.

In 1937, Harvard researchers began following the lives of 268 students. Year after year, the men were interviewed and given medical and psychological exams. The goal? Find a formula for happiness.

For insect detectives, the trickiest cases involve the bugs that aren’t really there.

On the underground doctors unleashing the healing powers of hallucinogens.

Around 60 people in the world share a condition called “highly superior autobiographical memory.” They remember absolutely everything.

We devote vast resources to intensive, one-off procedures, while starving the kind of steady, intimate care that often helps people more.

Henry Heimlich saved untold choking victimes when he invented his maneuver in 1974. Since then, he’s searched in vain for another miracle treatment—pushing ethical boundaries along the way. Now at the end of his career, Heimlich has hired an investigator to find an anonymous critic working full-time to destroy his legacy.

Will Lacey was just a baby when doctors diagnosed a rare form of cancer and told his family there was only one end. Nobody then could imagine the journey ahead, from hospital rooms to board rooms, research labs to government offices, a furious race between hope and death.

For three days, thousands of uninsured Americans converge on the Wise County Fairgrounds for the largest pop-up clinic in the country.

On Robin Williams’s final months.

A boy whose skin blisters at the smallest touch is fighting for his life.

A physician becomes convinced he’s dying.

For those who suffer from environmental illnesses, the town of Snowflake is an escape from a modern world full of allergens: fragrances, gluten, wifi.

A physiological theory of mental illness.

“Over and over again, records show, predatory physicians took advantage of a doctor’s special privilege — the daily practice of asking trusting people to disrobe in a private room and permit themselves to be touched.”

Over the past five years, the Syrian government has killed almost 700 medical personnel. Inside the race to spread medical knowledge as the Assad regime erases it.

Did Afghan forces target the M.S.F. hospital?

Medicine, the company says, can also be a tasty snack.

One woman’s hunt for possibility after an Alzheimer’s diagnosis.

A mother’s quest to find a diagnosis for her daughter’s mysterious condition.

How a burst blood vessel transformed the mind of a deliberate, controlled chiropractor into that of an utterly unfiltered, massively prolific artist.