The New York Times

Potent powders can produce a nearly catatonic state, particularly in those who have not tried the drug before.

Since the days of Dr. Alzheimer himself, there has been a dream that severe senility might have an explanation — and a cure. The search for both has never been more urgent.

States said the cash infusion will help bolster efforts to increase vaccinations and identify cases.

As enrollment for Medicare Advantage begins this month, older Americans are confronting fewer options because insurers are discontinuing coverage in many areas.

New details have emerged about an initiative that starts in December to fast-track the vaccines, similar to the successful push for the Covid-19 vaccine.

Nearly 100 patients discussed their maladies with a Google bot, called AMIE, before meeting with physicians.

They thought it might explain why their health had diverged. Instead, it stirred up feelings that weren’t so easily quantified.

Vaccine safety experts say more research into the side effects would be welcome yet question whether the health secretary’s effort will be grounded in science.

Senator Patty Murray, a former chair of the Senate health committee, is forming a group of experts to examine how to insulate the C.D.C. from political interference.

The networks also develop treatments and preventions for other infectious diseases and were instrumental in testing the Covid vaccine.

The microbiome isn’t what it used to be in many parts of the world. The shift of species may be affecting the well-being of people in industrialized countries.

The son of Cindy Crawford, who died last month, left behind a trove of first-person testimonials about years of drug use, trying to stay clean and his mental health.

Ken Paxton, the Texas attorney general and Republican Senate candidate, has alleged a sprawling profit-driven conspiracy. Pediatricians say the accusations are an attempt at intimidation.

Karl Deisseroth, Peter Hegemann, Georg Nagel were awarded the prize for their work on light-gated ion channels and optogenetics.