Approximately one in eight women will develop a thyroid condition during their lifetime, which can include PCOS, Graves' and Hashimoto's disease. Symptoms can range from fatigue and weight gain to dry skin. These stars have shed light on the daily struggles of their conditions...

The chandelier singer was diagnosed with Grave’s disease in 2010. Grave's is an autoimmune condition that occurs when the body’s immune system attacks the thyroid gland. Sia also suffers with Ehlers-Danlos syndrome, a neurological disease and connective-tissue disorder that causes chronic pain. Sia said at the time: “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 nuthouse and everything and then I realised that I’m not crazy — I’m sick, with a real disease.”

The ‘Breakaway’ singer struggles daily to manage her hypothyroidism due to Hashimoto's disease which results in fluctuating weight. She said: “I had an autoimmune disease and a thyroid problem that started in 2006. "I know the industry loves the weight gone, but for me, it wasn't really [about] the weight. For me, it was 'I'm not on my medicine any more."

The former Disney star was left distraught after being diagnosed with Hashimoto's in her teens. She said: “All my life I’ve always had great skin, so it was really devastating. "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. “All my life I've always had great skin, so it was really devastating. “Also, at first, I was losing a lot of weight, then I went on tour and I started gaining weight, and it was the most I’d ever gained in my life. I was, like, 115 pounds. Then when I filmed a movie last summer, I actually went under 100 pound.”

The ‘Pretty Little Liars’ star was hit with online criticism after she gained 70 pounds in two years. But Sasha, who was told she looked pregnant and fat, revealed her weight gain was actually due to polycystic ovary syndrome - which causes the sufferer to have an enlarged thyroid. She said: “As a lot of you have noticed my body has gone through some changes, and I want to clear the air and give you an explanation. I have been facing a bad hormone imbalance that has thrown my body completely out of whack. I want to assure you that I’m healthy and getting everything back on track! A big thanks to all of you who have been in my corner!”

The ‘Good Place’ actress isn’t always in a good place as everyday is a struggle living with Hashimoto's. Jameela always uses her social media platforms to raise awareness of the condition and offer support to her fellow sufferers. She said: "Living with an auto immune condition is a real pain, and it irrationally makes you feel like a failure for not being able to ‘live it up’ like other ‘normal’ people. “Shout out to all of us who struggle with this."

The ‘Star Trek Beyond’ actress was recently diagnosed with Hashimoto's - side effects which can include tiredness, dry skin and weight gain – in October 2022. Saldana has always been predisposed to the condition as her mother and sister both suffer with the same disease. The actress opened up about her struggle, saying: "I had a great time in my 20s. Then your doctor says you're losing calcium in your bones. "I would hear those conversations with my mom and grandma, thinking I'd never get there. I'm going to live forever! But all of a sudden it hits you. "Your body doesn't have the energy it needs to filter toxins, causing it to believe that it has an infection, so it's always inflamed. You create antibodies that attack your glands, so you have to eat clean."

The supermodel put her body shamers to shame and addressed the reason why her body has changed and gotten more curvaceous over the years. She said: “For those of you so determined to come up with why my body has changed over the years, you may not know that when I started [modeling] @ 17 I was not yet diagnosed w/Hashimoto's disease. Those of u who called me 'too big for the industry' were seeing inflammation & water retention due to that."

The ‘Modern Family' star was told she had thyroid cancer back in 2000 aged just 28. A routine check-up at the doctor’s found she had an unusual lump in her neck. Since getting her cancer removed she’s been on medication for her hypothyroidism. She said: “They removed my thyroid and since then I have to use medication. I got rid of the cancer and then for me it was, ‘Oh shoot, now I have to live with this condition my whole life ... I have to be on medication my whole life.'"

The 'Get Ur Freak On' rapper has been living with Graves' disease since 2008. Missy discovered she had the illness after experiencing tremors which ended up being so bad she couldn't even hold a pen. She said: "I couldn't keep the brake down and almost crashed." The hip hop star also suffered from hair loss which is a common symptom of the disease.

The talk show host was diagnosed with Hashimoto's thyroiditis and hypothyroidism back in 2007 and has been open about the struggles she's faced that have included acute insomnia and gaining 20 pounds of weight. 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!)”