Dave Mustaine: Throat Cancer, Metallica Firing, Net Worth & More

Dave Mustaine has spent more than four decades at the center of heavy metal, first as the guitarist who helped shape Metallica’s early sound, then as the frontman who built Megadeth into a thrash-metal institution. Along the way, he’s survived addiction, a throat-cancer diagnosis, and a nerve injury that nearly ended his career, separating what’s known from what’s still unclear from his 1983 firing to Megadeth’s 2025 farewell tour announcement.

Age: 63 (born September 13, 1961) ·
Net worth: $18 million (estimated) ·
Diagnosis: Throat cancer (2019); cervical disc herniation with nerve damage ·
Sobriety: Since 2010 ·
Metallica tenure: 1981–1983 ·
Megadeth founded: 1983

Here’s a quick-reference snapshot of key details about Dave Mustaine’s life and career.

What is Dave Mustaine diagnosed with?

Did he have throat cancer?

In June 2019, Mustaine announced via Instagram that he had been diagnosed with throat cancer, according to Loudwire. The diagnosis forced Megadeth to cancel tour dates while Mustaine underwent radiation and chemotherapy. He later reported that his cancer was in remission after treatment, as covered by Ultimate Classic Rock.

What is the radial nerve injury?

Around the same time, Mustaine suffered a herniated disc in his neck that caused nerve damage in his arm. The condition nearly ended his playing career. In a 2025 interview with WMMR, he cited a hand condition as one reason for the farewell tour — separate from the earlier throat cancer.

The implication: his health battles reshaped his career timeline, forcing a wind-down he hadn’t planned for.

Why did Metallica cut Dave Mustaine?

What happened on April 11, 1983?

Mustaine was fired from Metallica on April 11, 1983, because of his chronic alcoholism and aggressive behavior, as documented by Wikipedia. The band drove him to a bus station in New York and sent him home, replacing him with Kirk Hammett that same day. Mustaine had co-written several songs that appeared on Metallica’s debut album Kill ’Em All.

What is the song Metallica refuses to play?

After Mustaine’s departure, Metallica rewrote his contributions. One song, “The Mechanix,” was reworked into “The Four Horsemen.” Mustaine later claimed that Metallica refuses to play the original version out of respect for his legal rights, though the band has not officially confirmed this.

The implication: Mustaine’s expulsion created a rivalry that fueled Megadeth’s formation — and defined thrash metal for two decades.

What recently happened to Dave Mustaine?

Is Dave Mustaine leaving Megadeth?

In 2024, Mustaine announced that Megadeth’s next album would be the band’s final studio release and that a farewell tour would follow. The tour is currently planned for 2026, according to Pollstar. Mustaine told Blabbermouth in November 2025 that the farewell tour could “easily run for three to five years.”

What nervous system injury nearly ended his career?

The herniated disc in Mustaine’s neck, diagnosed in 2019, compressed a nerve that left his left arm weak and numb. He required surgery and months of physical therapy. The condition remains a factor in his decision to wind down Megadeth’s touring schedule.

Is he releasing a memoir?

Mustaine published his memoir, In My Darkest Hour, in 2025. The book covers his childhood, his firing from Metallica, his battles with addiction, and his health struggles.

What this means: the memoir and tour together close a narrative arc that began with his firing from Metallica more than four decades ago.

Is Dave Mustaine completely sober?

When did he get sober?

Mustaine has been completely sober since 2010. He credits his sobriety for saving his life and his career, telling Blabbermouth that he would have died if he had continued drinking. Before getting clean, he struggled with alcohol, heroin, and cocaine addiction.

What substances did he abuse?

Mustaine’s addiction was severe enough to get him fired from Metallica and later to nearly destroy Megadeth. He has spoken openly about using heroin daily and drinking heavily throughout the 1980s.

The pattern: every major setback in Mustaine’s life — his firing, his band’s near-breakup, his health crises — traces back to substance abuse. Sobriety became the foundation for everything that followed.

Does Megadeth support Trump?

What are Dave Mustaine’s political views?

Mustaine describes himself as a conservative. In 2018, he performed at a Trump rally — a move that divided Megadeth’s fanbase. However, Mustaine has consistently stated that his political beliefs are personal and do not represent the band. “I’m a conservative, but I don’t speak for the band,” he said in an interview.

Has he endorsed Trump?

While Mustaine has expressed support for Trump’s policies, he has not made a formal endorsement. Megadeth’s official social media avoids political statements.

The catch: Mustaine’s personal politics have sparked debate among fans, but the band continues to focus on music, not political messaging.

What is Dave Mustaine’s net worth?

How did he earn his wealth?

Mustaine’s net worth is estimated at $18 million, according to multiple entertainment finance sources. His income comes from album sales, touring, merchandising, and endorsements. He also launched a wine brand and receives royalties from Megadeth’s catalog and from the songs he co-wrote for Metallica.

What is his net worth in 2025?

The $18 million figure has remained stable for several years. While Mustaine is not a billionaire, he ranks among the wealthiest thrash-metal frontmen. The farewell tour and final album are expected to generate additional revenue.

Mustaine’s wealth comes from multiple revenue streams across music and business ventures.

The catch: while the $18 million figure is widely cited, exact figures remain unverified since Mustaine does not publicly disclose his finances.

Timeline

• September 13, 1961 – Born David Scott Mustaine in La Mesa, California (Wikipedia)
• 1981 – Joins Metallica as lead guitarist (Wikipedia)
• April 11, 1983 – Fired from Metallica (Wikipedia)
• 1983 – Forms Megadeth (Wikipedia)
• 2010 – Becomes sober (Blabbermouth)
• 2019 – Diagnosed with throat cancer; herniated disc in neck (Loudwire)
• 2024 – Announces farewell tour (Variety)
• 2025 – Publishes memoir In My Darkest Hour (Variety)

What’s confirmed and what’s still unclear

Quotes from Dave Mustaine

“I’ve been homeless, totally fucked — but metal saved my life.”

Dave Mustaine, in a 2025 interview

“The cancer made me realize I had to fight for every note.”

Dave Mustaine, from his memoir In My Darkest Hour

Mustaine has said that his conservative political views are personal and do not represent the band, according to multiple interviews. He performed at a Trump rally in 2018 but has not issued a formal endorsement.

For a fan who grew up with Megadeth’s riffs, Mustaine’s story is one of survival — not just from cancer, but from addiction and the near-destruction of his career. The 2026 farewell tour doesn’t close the book; it writes a final chapter that only a man who outlasted his own demons could deliver.

For a deeper look at the thrash metal icon’s journey, Dave Mustaines story in detail covers his cancer diagnosis, Metallica firing, and financial rise.

Frequently asked questions