Dr. Ruth K. Westheimer’s name has been synonymous with sex ever since the 1980 launch of her New York radio show, “Sexually Speaking.” For decades, she advised Americans on everything from the best time of day to roll in the sheets to how to build confidence about your body. Quotes like this grace the front of T-shirts sold all over the internet: “Curvy women need to visit a museum. Men have been attracted to those curves forever and still are. They can’t help it and that helps you.” Less is commonly known about Westheimer’s life before she became known as America’s favorite sex therapist. Becoming Dr. Ruth traces Westheimer’s early years, starting when she fled Germany as a child after the Nazis took her father. She landed in a Swiss boarding school, but both of her parents died in the Holocaust. Her unconventional life took her to Jerusalem, then on to America, where she made a name for herself and published a steady stream of books. This is the second time Theater J is putting on Mark St. Germain’s Becoming Dr. Ruth, and Naomi Jacobson is once again the star of the one-woman show. She earned a Helen Hayes Award nomination for the role in 2018. Sept. 30 through Oct. 24 at Theater J. $5 to $75.