Low-Dose Lithium 

“Lithium drinks were in huge demand for their reputed health-giving properties, so much so that the element was added to commercial drinks. 7-Up was originally called Bib-Label Lithiated Lemon-Lime Soda and contained lithium citrate right up until 1950. In fact, it’s been suggested that the 7 in 7-Up refers to the atomic mass of the lithium.”

—Fels, Anna. “Should We All Take a Bit of Lithium?The New York Times. September 13, 2014.

Low dose lithium might be a beneficial public health intervention on the level of fluoride. 

Prevalence of Dementia in the United States

“And if dementia is one of the most dreaded forms of decline associated with aging, it is also one of the most common. The condition affects about 14 percent of people over age 71. The prevalence of dementia increases with age, rising from about 5 percent among people in their 70s to 24 percent of those in their 80s – and of those who reach age 90, approximately 40 percent are affected.”

—Taylor, Janelle. “How being friends with someone who has dementia can be good for you both.” The Conversation. July 6, 2017.