Three months later, her career ended after winning what would have been a fifth straight National Championship in the 1500 meters when she was disqualified and banned for doping related to the BALCO scandal.

[1][2] After graduating from Stanford, Jacobs represented the US in three consecutive Summer Olympics starting in 1988 in Seoul, South Korea.

On February 1, 2003, Jacobs set a world record in the indoor 1500 m with a time of 3:59.98, becoming the first woman to break 4 minutes in the event.

[5] In 2003, she retired after she tested positive for BALCO's 'designer' steroid THG and was suspended from competing in track & field for four years by the United States Anti-Doping Agency.

Following her ban and subsequent retirement, Jacobs became a real estate agent in the Oakland, California, area.