Demi filmed her music video for "Really Don't Care" at LA Pride (demi lovato/youtube)

Demi Lovato is a modern-day hero.

While many celebrities are scared of saying anything controversial for fear of hurting their brand, the “Sorry Not Sorry” singer has used her platform to open up about her sexuality and struggles with mental health and addiction.

Demi, who is now stable and awake in hospital after suffering a reported drug overdose yesterday (July 24), has been fearless in her activism despite being in the public eye since she was a child.

The 25-year-old star revealed she was open to dating women in October after years of LGBT advocacy.

Demi went on to explain that she was “very fluid,” adding: “I think love is love.

“You can find it in any gender. I like the freedom of being able to flirt with whoever I want.”

But long before she opened up about her sexuality, the singer was leading the fight for LGBT rights, as demonstrated by GLAAD giving her its Vanguard Award in 2016.

When she picked up the honour, she said it meant “more than any music award” and teared up talking up growing up in Texas, “where it wasn’t very accepting of any sort of LGBT person.

“I grew up with friends that were gay and were afraid to come out,” she told the crowd, before saying that same-sex relationships were simply a part of life.

“It’s love, and people deserve to be able to love who they want to love,” said Demi.

The video for her 2014 hit song “Really Don’t Care” was filmed during her performance at LA Pride and featured a lesbian couple kissing and dancing transgender activists.

She also campaigned for equal marriage before it was legalised in the US in 2015, which included becoming the face of the Human Rights Campaign’s Americans for Marriage Equality Initiative.

Demi may have hit the headlines this year when she kissed queer singer Kehlani during one of her concerts, but it wasn’t the first gay kiss to grace her stage.

In 2014, she was unapologetic in the face of criticism after two of her male backup dancers – one of whom was naked apart from a picture of President Putin’s face over his genitals – passionately embraced in front of her audience.

And the star has been equally brave in speaking about her mental health, revealing when she was still a teenager that she was dealing with depression, bulimia and the trauma of being bullied.

She has repeatedly opened up about how her struggles have caused her to self-medicate with hard drugs and alcohol self-harm and nearly overdose multiple times, and even offered free group therapy sessions to fans before concerts on her world tour this year.

Demi could provide those sessions because she co-owns CAST Centres, an organisation which offers mental health and wellness programmes, showing her commitment to helping others.

She has gone through more than her fair share of pain and suffering, which is why it was so inspiring to see her announce earlier this year that she was six years sober – and why it was so devastating when she revealed just a few months later in “Sober” that this was no longer true.

The news was heartbreaking for her fans, and went against the classic redemption story that people like to tell around mental health and addiction, of the brave hero who overcomes their inner demons and never looks back.

It’s a tale thousands of years old, but all too often, it’s far from the truth – which is why it was so incredibly brave of Demi to publicise the end of her sobriety.

It is incalculably important for fans and the public to see a visible queer singer like Demi who consistently pushes for acceptance and understanding on multiple fronts by showing her scars to the world.

Today’s events have hopefully reminded all of us not to take her for granted.