When company stops by her home in Akron, Ohio, she offers a joint, and when it’s someone’s birthday, a bong is prepared. She even hosts summer campfires where the older folk listen to the Beach Boys, Led Zeppelin and the Beatles; eat grilled steaks and hot dogs; and get high (not necessarily in that order).

“It’s nice,” Ms. Neufer said. “It’s just a social thing. It’s like when people get together, and they crack open their beers.”

Statistics suggest that more members of the older generations, like Ms. Neufer, are using marijuana. The National Survey on Drug Use and Health reported in 2011 that 6.3 percent of adults between the ages of 50 and 59 used the drug. That number has risen from 2.7 percent in 2002.

And anecdotal evidence points to much of this use being sociable rather than medical.