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American gymnast icon Mary Lou Retton is currently facing a life-threatening health challenge, as revealed by her daughter McKenna Kelley on Tuesday.

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McKenna disclosed that her mother is battling a very rare form of pneumonia, rendering her unable to breathe on her own, leading to her ICU stay of over a week.

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In an effort to support her mother's medical expenses, McKenna launched an online fundraiser on Spotfund, emphasizing that Mary Lou Retton is not insured.

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Mary Lou Retton soared to fame in the 1984 LA Olympics, clinching the first-ever all-around gymnastics gold for an American woman. 

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She's renowned for her remarkable feat, which not only led to her being featured on the Wheaties cereal box but also captured the hearts of countless Americans.

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The online fundraiser for Mary Lou Retton's medical expenses surpassed its initial goal of $50,000, collecting over $72,000 in donations as of Tuesday evening.

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Hailing from Fairmont, West Virginia, Mary Lou Retton's gymnastics passion was sparked by Nadia Comăneci's 1976 Olympics performance in Montreal. 

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She relocated to Houston to train with gymnastics coaches Béla and Márta Károlyi, who also coached Nadia Comăneci in Romania.

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Mary Lou Retton is a five-time Olympic medalist, most notably clinching the all-around gold medal at the 1984 Los Angeles Olympics.

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Her victory was dramatic, marked by perfect 10s on floor exercise and vault, which allowed her to edge out Romania's Ecaterina Szabo by a mere 0.05 points.

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Mary Lou Retton's Olympic haul included all-around gold, vault silver, uneven bars, and floor exercise bronze, plus a silver in the team event. 

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Her five medals at the 1984 Olympic Games made her one of the most celebrated American athletes, and she was named Sports Illustrated's "Sportswoman of the Year" in 1984.

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Mary Lou Retton remained the only American Olympic all-around champion until several others achieved the same feat in later Olympics.

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Following her triumph in the 1984 Olympics, she went on to win the American Cup all-around competition in 1985, marking her third victory in the event.

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Retiring in 1986, Mary Lou Retton aimed to be a champion not clinging to the sport. She thrived in TV and motivational speaking, leaving her mark beyond gymnastics.