Marie Osmond on Her Weight Struggles — "My Mom Saved My Life"

Marie Osmond is getting candid about her lifelong weight struggles — and has revealed her late mom saved her life by once giving her one key piece of advice.

“She was overweight, and right before she died, she said to me, ‘Marie, don’t do to your body what I did to mine,'” Marie, 57, exclusive told Closer Weekly. “Those are powerful words right before you leave this life, and my mom saved me.”

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The singer’s mother, Olive May Osmond, sadly died at age 79 in May 2004 on Mother’s Day. Surrounded by friends and family — she was a mother-of-nine — Olive sadly passed away from complications of a stroke she suffered in November 2001.

Marie with her mother, Olive, in July 1978.

Before her death, Marie’s beloved mom warned her daughter to live a healthy life or “you don’t have the energy or ability to serve your family,” the star recalled to Closer.

“At one point I was taking care of [her]. She had heart disease and it took her life, and my grandmother’s — I was a ticking time bomb. I knew I had to do something,” Marie said.

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Marie — who rose to showbiz stardom when she was just four-years-old — has struggled with her weight her entire life. “[In my teens], I was 103 pounds, and I had producers telling me I was fat — I got down to 90 pounds at one point,” she confessed. “The head trips are intense. Food was becoming my enemy, and it should not be that way.”

Marie in 2006 (left) and 2016 (right).

In 2013, Donny Osmond‘s younger sister began professionally promoting Nutrisystem, the weight loss program that has helped her lose 50 pounds in recent years. “I had to find something that worked for me,” she said of the diet and exercise regimen. “I finally learned how to eat!”

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“[Today], I am happy! I love who I am, and I’m proud of what I’ve done!” Marie told Closer of her newfound, positive body image. We’re so happy for you, Marie!

For more on Marie, pick up the latest issue of Closer Weekly, on newsstands now!

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Click through the gallery below to see more stars’ weight loss secrets!

Kate Hudson

Kate's secret to staying fit? Cutting sugar from her diet! "That was an eye-opener for me, I realized I was craving [sugar] like an addict around 4 p.m. every day. I would crave something sweet and it hit me how much sugar we really eat," the star said during an interview for Jimmy Choo's Autumn/Winter 2015 campaign.

Jada Pinkett Smith

According to the actress, getting fit is more about eating right than hitting the gym! "We start eating because we want our muscles more toned, that's more proteins — or eating because you want to have more energy, that means more vegetables. Your whole body will change," she told People of her diet advice.

Brooke Burke-Charvet

The mom-of-four stays healthy and happy by prioritizing workouts! "I really try to make sure I schedule my workouts like I schedule my kids’ appointments. I just really believe in giving the gift of fitness to ourselves — if you’re going to get addicted to something, get addicted to fitness. The benefits are so great!" Brooke told Closer in an exclusive interview.

Soleil Moon Frye

The mom-of-four recently shed more than 20 pounds by following a Nutrisystem diet and exercising with her kids! "[The meal plan] has been amazing… I just love that I get to eat while [on the program], because I’m not someone who can just survive on water, that’s not me. I’m really enjoying the food," Soleil — who is one of the co-founders of Seedling, a collection of toys, crafts, and activity kits for kids — exclusively told Closer Weekly.

Christie Brinkley

"[Start] with a healthy diet — nutrition is an amazing way to contribute to your own well-being, and, of course, exercise and attitude," Christie recently told Elle, adding that she follows a strict vegan diet. "Adopting a really positive attitude can work wonders to adding years to your life, a spring to your step, a sparkle to your eye, and all of that."

Al Roker

According to the Today Show weatherman, weight loss is all "about a balance" of diet choices and regular exercise. "I bike to work every day. I eat a little bit less. I take a couple of hard-boiled eggs to work for breakfast. I have a salad for lunch and then a normal dinner," he told Closer in October 2014.

Debra Messing

Last April, the former Will & Grace star revealed she shed 20 pounds by eating "really, really clean healthy foods." Her go-to snack? Green juice! "[It includes] kale and spinach and celery and ginger and lemon and cucumber," she told ABC News. "At least I know I'm starting my day and getting a big shot of nutrients that I need. I start out strong."

Drew Barrymore

The actress recently shed 20 pounds by cutting out junk food from her diet! "I was 144 and now I'm 124. I feel really great. I followed Kimberly Snyder’s methods, but I added some protein like fish and chicken since she's all vegetarian or vegan. I've been very disciplined and all I did was cry and dream about pizza. I still am dreaming and crying about pizza," she revealed.

Marie Osmond on Her Weight Struggles — “My Mom Saved My Life”

Kate Hudson

Kate Middleton

Jada Pinkett Smith

Brooke Burke-Charvet

Soleil Moon Frye

Christie Brinkley

Sarah Ferguson

Al Roker

Debra Messing

Roseanne Barr

Joy Behar

Jennifer Aniston

Carrie Underwood

Drew Barrymore