Patient advocates hope Dr. Michelle Tarver will lead the agency to focus more on safety and less on rapid approvals.

The Ames Test offered a fast and inexpensive way to identify carcinogens, leading to the banning of chemicals linked to cancer and birth defects.

In a first, the guidelines link poor pregnancy outcomes to stroke and call on doctors to exercise greater vigilance.

Low-impact, easy workouts can offer relief for sore muscles.

Here’s how they stack up against their conventional counterparts.

The drug cocktail can contain ketamine, Ecstasy and meth — but rarely cocaine itself.