Every night before bed, Norma Winkler, 82, opens a small jar of cannabis oil and measures out a quarter teaspoon to mix with homemade applesauce. Soon after she eats it, she drifts off to sleep. Ms. Winkler, who lives in Rhode Island, where medical marijuana is legal, has endured chronic back pain since a car accident fractured her skull and spine at age 15. Operations haven’t helped, and other medicines don’t touch the pain that can keep her up through the night. Today, she’s healthy enough to remain independent in her home and to operate the jewelry factory she owns. But she worries about what will happen if she needs institutional care. – The New York Times