For the first time, a large population-wide study of young women found no new cases of cervical cancer among those who had received a vaccine against human papillomavirus (HPV).

On a sunny winter day, Caitlin Pietz stood in front of a small metal bell as a stream of sunlight cascaded through the windows beside her. With her husband Mark at her side, she gripped the chain that hung from the bell and paused for a moment as her loved ones watched.

The health risks associated with alcohol use are well known. A drink once in a while is fine, but excessive drinking can lead to serious health problems.