Céline Dion can no longer control the muscles in her body. The revelation was made by the Canadian singer's sister, Claudette, in an interview with the newspaper 7 Joursfrom Canada.

According to the sister, some people have lost hope because this is a disease that is not well known.

"If you only knew how many calls we get at the Foundation asking for news of Céline. People tell us that they love her and are praying for her. She receives lots of messages, gifts and blessed crucifixes. She works hard, but she can't control her muscles. What makes me sad is that she has always been disciplined. She's always worked hard. Her mother always told her: "You're going to do this right, you're going to do it properly," Claudette said, and of the whole interview, this was the excerpt that got the most attention in the international press.

In the meantime, her sister still believes in the singer's return to the stage, but asks: "In what condition?" Despite her desire, Claudette explains that she doesn't know if it will even be possible for Céline Dion to resume her career, pointing out that "the vocal cords are muscles, the heart is also a muscle" and this is a disease that attacks all the muscles in the body.

"That's what worries me," Claudette Dion concluded.

The Canadian singer is now 75 and about a year ago was diagnosed with the rare and incurable neurological disease known as Stiff Person Syndrome.

In May, Céline Dion canceled her concerts scheduled for 2023 and 2024 for health reasons. According to the statement on the official websiteDuring the pandemic, the singer began "being treated" for a condition "that prevents her from performing" and, because she is working "hard on her recovery", she is unable to prepare for the remaining shows on the "World Courage Tour".

The Canadian singer has been diagnosed with Moersch-Woltmann syndrome - also known as "stiff person syndrome".

It is "a rare and progressive syndrome that affects the nervous system, specifically the brain and spinal cord", according to the US National Institute of Neurological Disorders.

"Symptoms can include extreme muscle stiffness and painful spasms in the trunk and limbs, severely impairing mobility," says the institute. "The spasms can be strong enough to fracture the bone."