Weight gain, hair thinning, excessive hair growth - some 1.5 million people are suffering with a condition that is also one of the leading causes of fertility problems. But lots of people have no clue what it is.
Polycystic ovary syndrome (known as PCOS) affects approximately 1 in 10 women. There is no exact cause and it can be difficult to treat the symptoms.
With so many women affected, you will likely know someone who has it. And in a bid to raise awareness, a range of celebrities are coming forward to tell their experiences of PCOS - including Spice Girl Victoria Beckham, The Saturdays singer Frankie Bridge, Pretty Little Liars star Sasha Pieterse, and Hollywood actress Keke Palmer.
