© Getty Images

Hilary Clinton - The former United States Secretary of State suffers with hypothyroidism, a condition in which the thyroid gland doesn’t produce enough hormones.

© Getty Images

Leona Lewis - British singer-songwriter Leona Lewis suffers with the thyroid condition Hashimoto's disease.

© Getty Images

Oprah Winfrey -

Oprah had a terrible experience as a result of thyroid issues. Speaking about it, she said: “My body was turning on me. First hyperthyroidism, which sped up my metabolism and left me unable to sleep for days. (Most people lose weight. I didn’t.) Then hypothyroidism, which slowed down my metabolism and made me want to sleep all the time. (Most people gain weight. I did! Twenty pounds!).”

© Getty Images 

Kim Cattrall - The 'Sex and the City' star was diagnosed with Hashimoto's disease in 1998. Speaking about it, she said: "If your thyroid is out of whack, you're screwed, as it's your body's thermometer and you can't function. Now I'm on thyroxine and get my blood tested twice a year."

© Getty Images

Gina Rodriguez - The 'Jane the Virgin' actress has always struggled with her weight due to Hashimoto's disease. Speaking about it, she said: "Keeping weight off is very difficult because my metabolism is pretty much shot, which to me felt like a curse when I was 19. As an actress, I would say, 'Seriously? In a world that's so vain, I have to deal with the disease that makes you not keep weight off?'"

© Getty Images

Rod Stewart -

The rock legend has had his fair share of health issues, but many don't know he suffered with papillary thyroid carcinoma.

© Getty Images 

Gigi Hadid -

The model has Hashimoto's disease. She opened up to Elle magazine about it, explaining that she'd been on medication for it for a few years.

© Getty Images

Missy Elliott - The hip-hop icon was diagnosed with Graves' disease, an autoimmune disease that causes an overactivity of the thyroid gland.

© Getty Images

Sofía Vergara - Sofía Vergara was 28 when she was diagnosed with thyroid cancer, which she luckily was able to have removed.

© Getty Images

Zoe Saldana -

Another sufferer of Hashimoto's disease, the actress explained: "You create antibodies that attack your glands."

© Getty Images 

Kelly Clarkson - The singer was diagnosed with Hashimoto's disease. She opened up about it, saying, “I know the industry loves the weight gone, but I mean, for me, it wasn't really the weight. For me it was like, I'm not on my medicine anymore. My bloodwork came back, and I haven't been on my medicine...”

© Getty Images

Molly Sims -

When Molly Sims had her son Brooks, she suffered with post-partum thyroiditis, which causes a swelling of the gland.

© Getty Images

Sia -

The singer was diagnosed with Graves' disease in 2010, saying: “It was making me very very crazy and I thought I had a panic disorder but I didn’t- I had Graves’ disease. I checked myself into the nut-house and everything and then I realised that I’m not crazy- I’m sick, with a real disease."

© Getty Images

Victoria Justice -

The actress was diagnosed with Hashimoto's disease several years ago. "They had put me on this thyroid medication, and I think the levels were too high for me because it caused my skin to break out," Justice told Health magazine in 2015. "All my life I've always had great skin, so it was really devastating."

© Getty Images

Bernie Sanders -

Sanders is in pretty decent health for his age, but he does have hypothyroidism.

© Getty Images

George H.W. Bush -

The late George H.W. Bush had an overactive thyroid caused by Graves' disease, an autoimmune thyroid condition, during his presidency.

© Getty Images

Katee Sackhoff -

When the actress started to feel stressed and anxious more than normal, she chalked it down to work. But it was later discover that she had thyroid cancer, which she fortunately then had removed.

© Getty Images

Roger Ebert -

The late American film critic was diagnosed with cancer of the thyroid and salivary glands in 2002, and in the following years he suffered many health complications.

© Getty Images

Wendy Williams - In 2018, Williams announced to the viewers of her talk show that she was suffering with Graves' disease and was pausing her show.

© Getty Images

Brooke Burke -

The model and media personality revealed in 2012 that she had thyroid cancer but had suffered with Hashimoto's disease before that.

© Getty Images

Catherine Bell -

When the 'JAG' and 'Army Wives' actress was 21, her dentist noticed a lump on her throat that turned out to be thyroid cancer. She had it surgically removed.

© Getty Images

Joe Piscopo -

Piscopo developed thyroid cancer during a successful 'Saturday Night Live' run in the 1980s.

© Getty Images

Kim Alexis -

The former supermodel has had long battles with both Hashimoto's thyroiditis and hypothyroidism.

© Getty Images

Gail Devers -

American track star Gail Devers almost had to have her feet amputated due to Graves' disease, but recovered to win three gold medals and compete in five Olympic Games.

© Getty Images

Gena Lee Nolin -

The 'Baywatch' and 'Sheena' actress released a book in 2013 exploring her battle with thyroid disease.

© Getty Images

Angie Everhart -

The model and actress had to undergo surgery to operate and remove thyroid cancer in 2013.

© Getty Images

Jenny Mollen -

The American actress and author has suffered with Graves' disease, which led to weight loss, fatigue, and period issues.

Sources: (Walk-In Lab) (HealthCentral) (E!)

See also: These celebrities have battled through breast cancer

© Getty Images