Story highlights Saldana's sister and mother also have the disease

She said she has changed her diet

(CNN) "Star Trek Beyond" star Zoe Saldana has revealed that she has an autoimmune disease.

"Your body doesn't have the energy it needs to filter toxins, causing it to believe that it has an infection, so it's always inflamed," Saldana said. "You create antibodies that attack your glands, so you have to eat clean."

Saldana's sister and mother also suffer from the disease.

It's forced the actress and her husband, artist Marco Perego, to go gluten and dairy free. A self-proclaimed foodie, Saldana said she had a great time eating in her twenties.

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