Jessica Alba was born in Pomona, California to Catherine Alba (née Jensen) and Mark Alba. Her mother is of Danish and French Canadian descent and her father is of Mexican American descent (both his parents were born in California). She has a younger brother, Joshua. Her father's Air Force career took the family to Biloxi, Mississippi, and Del Rio, Texas before settling back in California when she was nine years old.

Alba's early life was marked by a multitude of physical maladies; she suffered collapsed lungs twice, had pneumonia 4-5 times a year, a ruptured appendix, and a cyst on her tonsils. This isolated her from other children at school because she was in the hospital so often that no one knew her well enough to befriend her. She has also acknowledged suffering from obsessive-compulsive disorder during childhood. Her health improved, however, when her family moved to California. She graduated from high school at age 16, and subsequently attended the Atlantic Theater Company.

Alba appears frequently on the "Hot 100" section of Maxim and was voted AskMen.com's number one on their list of "99 Most Desirable Women" in 2006, as well as "Sexiest Woman in the World" by FHM in 2007. She also appeared on the cover of Playboy, which was followed by a lawsuit that was later dropped.^[9] Alba has won various awards for her acting, including the Choice Actress Teen Choice Award and Saturn Award for Best Actress (TV) for her acting in the series Dark Angel.

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