Olsen Twins Celebrate 29th Birthday But Mary-Kate’s Anorexia, Ashley Olsen’s Lyme Disease Cause Concern [Photos]

The Olsen twins Mary-Kate and Ashley had an OMG Olympic-themed birthday party. The Olsen twin sisters decided that turning 29 gave them a real reason to get fit and have fun with their favorite posh party pals, revealed the Hollywood Reporter.

Held in the ultra-chic Hamptons, the celebration ranged from an obstacle course to a dunk tank. Fans got to experience the Olsen twins’ teams vicariously with the hashtag #OlsenOlympics. And yes, they actually did have teams, with pals wearing either Team Mary-Kate or Team Ashley shirts.

Mary-Kate and Ashley won the Womenswear Designer of the Year award together recently. But the Olsen twins, although together in their career, played tough on their separate teams at their parties.

The winner was Team Ashley, revealed one party guest.

Despite the Olsen twins‘ birthday party fun, the sisters have experienced challenges through the years, reported the Daily Mail.

Olsen twins have party.

The fraternal twins jump-started their acting careers before they could walk by taking on the role of Michelle Tanner in Full House when they were only six-months-old. As they grew, they also did both TV and feature-length movies. But in 2004, rumors that Mary-Kate had an eating disorder began to circulate.

The Olsen twin then admitted that she had gone to a rehab center for treatment of anorexia. Some fans subsequently thought that she had plastic surgery.

“I’m so saddened by Mary-Kate Olsen’s plastic surgery decisions,” wrote one.

“Mary-Kate Olsen was good looking then plastic surgery happened,” posted another.

Beyond the anorexia health crisis for Mary-Kate, Ashley Olsen recently was reported to have Lyme disease, as the Inquisitr reported.

Some attributed that health concern to the Olsen twins’ reason for skipping the Full House reunion show.

Olsen twins turn 29.

Although fans hoped that they would take part in the revival on Netflix called Fuller House, executive producer Robert L. Boyett set the record straight.

“Although Ashley and Mary-Kate will not be a part of Fuller House, I know how much Full House has meant to them and they are still very much considered family. It has been exciting to see how they have built their professional careers, and I support their choice to focus on their fashion brands and various business endeavors. I appreciate their support and good wishes towards Fuller House.”

Those who know the actress and designer say that her Lyme disease getting progressively worse.

And now Ashley, with her twin Mary-Kate Olsen by her side, is fighting to regain her health. The first hint that something was wrong came in 2012.

“I don’t like to be the center of attention anymore,” said Ashley, abruptly retreating from the spotlight.

But it now appears that she may have exited the entertainment world prematurely because she was trying to hide her diagnosis of Lyme disease and the enervating symptoms of that condition.

Ashley Olsen may have Lyme disease.

“She’s really sick,” revealed a source.

Lyme disease is more common — and dangerous — than most people realize, according to Healthline.

It can be challenging to get a diagnosis, as well as to treat. The U.S. Centers for Disease Control and Prevention (CDC) reports 300,000 nation-wide diagnoses annually.

Of those who are bitten by a tick, 80 percent have symptoms including a rash, aches, pains, fevers, and flu-like chills. Antibiotics are sometimes given, but for some individuals, that treatment is not effective.

Both Avril Lavigne and Yolanda Foster have discussed their battles with Lyme disease, as the Inquisitr reported.

“I felt like I couldn’t breathe, I couldn’t talk and I couldn’t move. I thought I was dying,” said Avril.

[Photo by Newsmakers via Getty Images; Photo by Mike Coppola / Getty Images; Photo by Andrew H. Walker / Getty Images for Variety; Photo by Mireya Acierto / Getty Images]