She was also considered the longest-reigning monarch in Europe.

She’s also had other health scares over the years, most of which she recovered from relatively quickly.

This was due to other concerns about her health, which may have been exacerbated by her smoking habit.

Queen Margrethe smiling wearing pink hat

According to theMirror, she was successfully treated for the disease in 1994.

However, there’s no way of knowing for sure whether smoking contributed to Margrethe’s cancer.

The incident happened at the Marselisborg Castle during a vacation in Aarhus, Denmark.

Then-Princess Margrethe holding cigarette

She was 61 years old at the time of the frightening fall, per theOrlando Sentinel.

In mid-January 2003, the Queen underwent back surgery for ongoing issues associated with spinal stenosis.

In all, the operation took four hours to complete.

Queen Margrethe riding in a carriage

(Her surgery also required a team of four surgeons!)

The effects of the surgery seemed to help for several years, however.

This time, asUnited Press Internationalreported in September 2006, Margrethe had surgery for a hernia.

Queen Margrethe smiling

This included an appearance at the European Cultural Awards, which took place at the royal palace.

Needless to say, this is a very painful condition that requires surgical repair.

Such seems to be the case with Margrethe, who hasn’t appeared to suffer a recurrence.

Queen Margrethe walking, wearing formal outfit

Unlike her smaller operations in the 1990s though, this time her right knee received a total artificial replacement.

The surgery itself took about an hour, and Margrethe subsequently entered a rehabilitation program.

It mostly develops in adults over the age of 50.

Close-up of Queen Margrethe

They also note that surgery is usually a last resort, as was likely the case for Margrethe.

At this point in the pandemic, some people even reported getting COVID-19 multiple times.

Her first case of COVID-19 was in February 2022, when she was 81 years old, according toReuters.

Queen Margrethe wearing polka-dot hat

At the time, the royal house released a statement that Margrethe was experiencing mild symptoms.

Margrethe recovered without any further issues.

About seven months later, however, Margrethe came down with yet another COVID-19 infection.

Queen Margrethe wearing a surgical mask

This time, the now 82-year-old tested positive in September 2022, according toThe Guardian.

It’s thought that Margrethe contracted the virus after traveling toQueen Elizabeth II’s funeralearlier that month.

About two decades later, the Queen had a second back surgery for ongoing pain related to spinal stenosis.

Queen Margrethe getting out of car with walking stick

“After consultation with Rigshospitalet’s specialists, The Queen has decided to undergo extensive surgery.”

Additionally, she postponed a summer vacation until the following year.

Close-up of Queen Margrethe smiling