Olivia Munn Was Forced To Change Her Lifestyle 'Pretty Significantly' After Fibromyalgia Diagnosis

For years, Olivia Munn was just feeling off. "I wasn't really sure what was going on with me," the actress recalled. "I was going through a lot of different ailments for years and not knowing what was happening."

Finally, after five doctors came together, the Hollywood star was diagnosed with fibromyalgia, a common but incurable disorder that causes sleep issues, muscle pain, fatigue and more, states WebMD.

It was a sigh of relief for the Six star to have received an answer, but it also resulted in her having to make big lifestyle changes.

"I had to change my wellness routine pretty significantly. I had to be super thoughtful about what I put into my body," she explained. "I had to start eating gluten-free, dairy-free and sugar-free — I had to cut out a lot of things that I was used to having every day and things that I really loved."

Munn revealed that after her diagnosis, she was faced with two choices. "My situation was at a place where it was like, 'You're either going to go down a path where you're going to get multiple autoimmune diseases, or you have to stop now and we can try to get you better.'"

Needless to say, she decided to face the facts and revamp her diet — but since fibromyalgia is also linked to stress, her doctors told her that she needs to start eating food that she genuinely enjoys.

"He said... you have to find what you love to eat and drink because that will make a difference, because all the research has shown that when you're happy, you create chemicals that are good for your whole body and your gut health as well,'" she recalled. "'When you are unhappy and you're doing things that you don't like, you're eating things you don't like, you will create other things in your body that are not good for you. In order to keep yourself healthy, you have to find things that you enjoy.'"

Munn revealed to PEOPLE that his wise words had a big impact on her, and now, as long as she drinks three liters of water each day, sticks to her diet and meditates daily, the disorder is "under control."