The 55-and-older crowd is now the fastest-growing demographic of pot users in the country. Between 2013 and 2014, the number increased from 2.8 million to 4.3 million.
In California, where medical marijuana is legal, seniors are learning how to fill their prescriptions -- at a pot shop. They want to know the highs and the lows of marijuana use for the aches and pains of growing old, reports CBS News correspondent Barry Petersen.
Eva Aguillara, 80, uses it to help with mobility.
"Every medication has a risk. I've made my choice," she said.
Seniors account for only 14 percent of the nation's population, but they use more than 30 percent of all prescription drugs including some highly-addictive painkillers. So pot is fast becoming a pill alternative. Marijuana use is up 53 percent with the 55-and-over crowd.