WATCH: Jamie-Lynn Sigler Reveals Multiple Sclerosis Diagnosis, ‘I Want to Live My Truth’

This Sopranos actress is opening up about a huge secret that she’s been harboring since she was 20 years old.

Jamie-Lynn Sigler revealed in a candid interview to People magazine that she has been battling multiple sclerosis (MS), a disease that damages the nervous system, for over a decade. “I want to live my truth. I don’t want to hold a secret where it feels like I have something to be ashamed of or something to hide,” says Sigler of covering her illness. “It’s part of who I am, it’s not who I am, and I want to change people’s ideas of what this disease means to them, and possibly give people hope that it’s not the end.”

She began symptom-free, but then her MS began to attack motor functions. “I can’t walk for a long period of time without resting,” she says. “I cannot run. No superhero roles for me!”

Sigler covered her difficulties on the set of The Sopranos by taking “five or 10 minutes to sit and recharge”, though she feared that the cast and crew would become eventually become suspicious of her breaks. Despite the lack of a cure for MS, the actress now takes a twice-daily pill that has kept her symptoms in check for the past six years.

“It takes a fighting attitude to deal with all this. This disease can absolutely take over your life if you let it.”

Sigler felt that she needed to set an example of “strength and courage” to her two-year-old son. “I didn’t want him to get to an age where he felt like he had to keep this secret for me as well,” she explains.

The actress tied the knot to baseball player Cutter Dykstra, her fiancé of three years, over the weekend in a stunning Oscar de la Renta gown that she picked out with her mom. “It’s everything,” she told E! News. Watch her discuss living life with multiple sclerosis in the video below, and launch the gallery at the top of the page to view photos of her Las Vegas bachelorette party featuring NSYNC member Lance Bass.