In the fight against Alzheimer’s and dementia, researchers have found an ally in ballroom dancing. This week, Northern California group Ballroom Dance for Senior Fitness hosts its Awareness Gala in Yountville that will offer information on utilizing dance to boost brain activity and prevent dementia. Yountville mayor John Dunbar will be on hand to offer a declaration of the city’s support, and Napa musician Johnny Smith will lead big-band Opus to play the hits of the 1950s and ’60s as you dance the night away on Thursday, July 28, at the Napa Valley Performing Arts Center at Lincoln Theater, 100 California Drive, Yountville. 6:30pm. $25. 707.944.9900.