Now 24, she has written a memoir, “One Life” (Jessica Kingsley Publishers, 2009), about her recovery from anorexia after treatment at the Florida branch of the Renfrew Center, the nationwide eating-disorders clinic.

There is little research to indicate how many women are in a similar position. Israeli studies consistently find high rates of disordered eating among Jewish adolescents but not Arab ones, and Israel’s rate of dieting is among the highest in the world — more than one woman in four — though obesity rates are relatively low.

Data about American Jews is limited, but two small studies have reported high rates of disordered eating in certain communities. One of those, a 1996 study of an Orthodox high school in Brooklyn, found 1 in 19 girls had an eating disorder — about 50 percent higher than in the general population at the time. The 1996 study was done with the agreement that it would not be published. The other study, done in 2008, looked at 868 Jewish and non-Jewish high school students in Toronto and found that 25 percent of the Jewish girls suffered from eating disorders that merited treatment, compared with 18 percent of the non-Jewish girls.

Demand for treatment programs that accommodate Orthodox teenagers prompted the Renfrew Center to start offering kosher food at its clinics in Philadelphia, New York, Dallas and Florida, while a new residential facility catering to young women from the United States opened last year in Jerusalem. It is not affiliated with Renfrew.

Relief Resources, a mental health referral agency that serves Orthodox communities, runs an eating disorders hot line, and last year the O.U. teamed with a social worker to make “Hungry to be Heard,” a documentary about eating disorders among the Orthodox.

Most of the young women interviewed for this article said they did not blame the culture for their health problems and said they derived support from their religious faith. But they spoke openly about the enormous pressure they feel to marry young and immediately start families , and the challenges of balancing professional careers with the imperative to be consummate homemakers who prepare elaborate Sabbath meals.